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A glossary of terms important to IBM mainframe machines

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.NET:  Dot Net. Microsoft’s architecture for Internet-based applications, most notably providing a standard way for a program to call another program across the Internet, passing parameters, etc.

/proc file system:  Provides access to the state of each process and thread in the AIX1 system.

1.TR.6:  A control channel networking protocol for ISDN. Although it is a national standard in Germany it is gradually being replaced by Euro-ISDN.

1/LINK:  Software (MVS/VSE) which provides an ATM monitoring, control, and application development and execution environment. Announced May 1991 with the 4780. Withdrawn with support ending September 2001.

10/100/1000 Base-T Ethernet PCI Adapter:  A full duplex Gigabit Ethernet adapter for eserver pSeries. Announced October 2000.

10/Plus Association:  Partner organization set up by Tivoli and IBM in April 1996 to promote the TME, particularly Release 10 and later, which no doubt is why it’s called what it is. Replaced by an all-encompassing Business Partner Program.

100BaseT:  A series of 100 MBps IEEE 802.3 Ethernet standards for twisted pair cables. These include 100BaseTx (100Mbps over two-pair Cat5 or better cable), 100BaseT4 (100Mbps over four-pair Cat3 or better cable), 100BaseT2 (100Mbps over two-pair Cat3 or better cable).

1091:  16-inch, high resolution, color graphics monitor, with a single mode of 1280 x 1024 at 72Hz. Announced September 1992, withdrawn December 1993.

10Base2:  LAN cabling standard from the IEEE 802.3 committee. Provides low-cost Ethernet-like LAN on twinaxial cable, at 10MB per second, the maximum segment length being 200 meters.

10Base5:  LAN cabling standard from the IEEE 802.3 committee. Provides low-cost Ethernet-like LAN on twinaxial cable, at 10MB per second. The maximum segment length being 500 meters.

10BaseT:  LAN cabling standard from the IEEE 802.3 committee, often referred to as the RS-232-C of the 1990s. Provides low-cost Ethernet-like LAN over unshielded twisted pair.

1161:  ThinkPad i Series 1200.

1171:  ThinkPad i Series 1300.

1-2-3:  Lotus spreadsheet for the PC. Spreadsheets were arguably the first killer app for the PC, and many a Chief Financial Officer (CFO) bought a PC just to get one. It was VisiCalc that they were buying in 1981 just before and after the announcement of the IBM PC. But, within 18 months, Lotus 1-2-3 hit the market, initially being given away free, presumably as a beta test. Lotus promised integration, supplying a rudimentary database and word processor to go with their spreadsheet. Not only did 1-2-3 mean Easy As 1-2-3, but referred to the three applications. Before long, no one even remembered the name VisiCalc. 1-2-3/M was a MVS and VM version.

1-2-3/M:  An MVS and VM version of the Lotus 1-2-3 spreadsheet. Announced February 1990, developed by Lotus and marketed exclusively by IBM, although why anyone should want to buy such a thing is another matter altogether. Support ended April 1997.

1255:  Magnetic character reader for sorting documents used in banking and other applications. All three models were withdrawn February 1988.

128-bit encryption:  DES encryption using a 16-byte key that would require 3.4 times 10 to the 38th power attempts to guess. In theory, this would require at least 5.4 times 10 to the 18th power years for 1000 2GHz processors.

1331:  IBM DASD, vintage 1962, with removable disks.

1394:  High performance serial bus. IEEE 1394 is a 1995 Macintosh/IBM PC serial bus interface standard which facilitates high-speed communications and isochronous real-time data services. Originally called FireWire.

1400:  Early IBM processor family for commercial applications. Died out in the mid 1960s.

1403:  1,100 lpm train printer for the mainframe. Withdrawn February 1986.

1416:  Interchangeable train cartridge for the 1403 printer. Obsolete.

1443:  240 lpm bar printer for the mainframe. Obsolete.

1520:  Hand held scanner. Withdrawn May 1990.

1581:  Peripheral storage device. An RS-232 serial interface. Withdrawn August 1989.

1710:  Early IBM family of process-control computers. Became extinct in the 1960s.

1750/3750:  IBM’s Stored Program Control (SPC) analog PABXs, mainly used for voice, but with limited data capability. Sold throughout the world, with the exception of the USA, where they never received approval for connection to public networks. Obsolete and replaced by 8750/9750/Com300.

1750A:  VHSIC space-borne computer module made by IBM.

1Base5:  An implementation of the StarLAN IEEE standard on baseband medium at 1MB per second.

2064:  The IBM eserver zSeries 900 mainframe computer systems. Model 100 is a Coupling Facility.

2074:  The zSeries 900 operator’s console.

2105:  Enterprise Storage Server family first announced June 1998. Models support different combinations of Unix, Windows NT, zSeries 900, iSeries 400 and NetWare, including replacement of the 3990.

2205:  PS/2 printer. 24-pin dot matrix, 160-193 cps (draft), 53-64 cps (letter quality) with multifont support. Defunct.

2210:  Low-end multiprotocol router announced September 1994. Supports NetBIOS, SNA, and APPN over TCP/IP. Uses IBM hardware and Proteon software. ISDN adapter announced mid 1996. Withdrawn October 2000.

2216:  IBM multi-access connector. Announced October 1996. Withdrawn October 2000.

2217:  Nways multiprotocol concentrator which provides high-speed LAN interconnection across Frame Relay, X.25, or SDLC links, allowing transport of data using various protocols across reliable SNA networks. HPR support added March 1996. Withdrawn March 1998.

2218:  2218 Nways box designed as a migration aid for SNA users wanting to move to Frame Relay. Offers multi-protocol support for SNA/SDLC, bisync 3270, bisync/RJE, X25/QLLC, multi-point async, and other serial protocols; support for IP routing and IPX and Source Route/Transparent Bridging for SNA; and dual NetView/390 and SNMP management agents and corresponding management applications. Bought in by IBM from Sync Research (who originally sold the thing as the FrameNode) in March 1996. Withdrawn March 1999, replaced by the 2210.

2219:  IBM Nways Frame Relay switch. Announced April 1996. Withdrawn May 1998.

2220:  IBM Broadband Network Switch. Announced June 1994 with ATM support added April 1996. Withdrawn October 2000.

2225:  IBM Nways multiservice switch. Announced April 1996. Withdrawn May 1998.

2230:  IBM Nways ATM switch. Announced April 1996. Withdrawn May 1998.

2305:  Fixed-head drum. Obsolete.

2314:  IBM DASD, vintage 1965.

2380/2381:  9-wire impact printers from Lexmark. Announced July 1991. Withdrawn May 1996.

2390/2391:  24-wire 360 x 360dpi impact matrix printers from Lexmark. Announced July 1991 for the PS/1. Withdrawn May 1996.

2440:  Half-inch, high-speed, start-stop, reel-to-reel tape unit, mainly for the AS/400 and 9370. Withdrawn January 1992.

2456:  IBM scanner announced September 1990. Withdrawn September 1996.

2480:  LAN for connecting PCs and data collection devices to an iSeries 400. Initial versions worked at up to 2Mbps in cells 100-300 feet across, using spread-spectrum transmission to minimize interference.

2482:  A wireless Portable Transaction Computer (PTC) for use with the AS/400. Announced May 1996. Withdrawn May 1999.

2483:  A wireless LAN integrated laser Portable Transaction Computer (PTC). Announced May 1996. Withdrawn May 1999.

2484:  An AS/400 wireless LAN industrial portable transaction computer, designed for use in harsh industrial environments. Announced May 1994. Withdrawn May 1999.

2486:  AS/400 wireless data collection handheld portable transaction computer. Announced May 1994. Withdrawn May 1999.

2488:  Pen-based ruggedized PC for use in field and industrial environments. Announced June 1996.

2489:  Ruggedized notebook computer for use in the field and in harsh environments. Announced September 1996. Withdrawn November 1998.

248x:  IBM wireless LAN product family. Obsolete.

2493:  Portable Transaction Computer (PTC) for use with the 248x wireless LAN family. Announced June 1997. Withdrawn May 1999.

24 x 7:  Indication of continuous system availability. The ability to operate 24 hours a day, 7 days a week (alternatively 24 x 365). This is achieved through continuous operations and high availability.

2521:  The ThinkPad pen-based system model 700. This was IBM’s first entry into the pen-based computer market. Replaced by the 2523.

2523:  The ThinkPad pen-based system model 710T. Withdrawn September 1994.

2524:  The ThinkPad pen-based system model 730TE. Withdrawn June 1996.

2600:  ThinkPad 310E, 310ED and 315ED.

2603:  ThinkPad 500.

2608:  WorkPad z50 Mobile Companion. PDA announced April 1999 and replaced February 2000 by the ThinkPad 240 (2609) Model 21U.

2609:  ThinkPad 240 and 240X PDA-sized laptops.

2720:  At one time, a much-rumored replacement for the 3725 front-end processor (FEP). The 3745 is now generally acknowledged as being the real replacement.

2780/3780:  IBM batch or RJE terminals, now outmoded as hardware products, but whose protocols continue to survive.

286:  Abbreviation for 80286. 32-bit microprocessor chip design from Intel and used by IBM in the PC/AT and some PS/2 models. IBM also used the 286 in autonomous I/O processors in the AS/400. Provided rudimentary paging, enabling the implementation of virtual storage with a lot of coding effort. Introduced in 1982 and replaced in 1985 by the 386 which fully implemented paging.

2944:  IBM’s first try at building a channel extender. Obsolete.

3000:  IBM application StarterPak family. A package of low-cost S/390 hardware and systems software. Announced September 1997. Withdrawn February 2000.

3044:  A channel extender link. An unintelligent single channel using fiber optics, for linking mainframes to peripherals up to about 2km away (it’s limited by timing constraints on the I/O). Up to 4.5Mbytes/second. Outmoded by ESCON. See Fiber optic channel.

3081:  IBM processor unit. Obsolete.

3082:  The processor controller for the defunct 308x mainframe.

3083:  IBM processor unit. Obsolete.

3084:  IBM processor unit. Obsolete.

3087:  Coolant distribution unit for the 3081, 3083 and 3084 processor units. Withdrawn October 1988.

3088:  Multisystem Channel Communications Unit (or Multiple-System Coupling Unit – MSCU). Device for interconnecting processor channels. Announced June 1982. Withdrawn November 1994, but still supported by the latest version of z/VM TCP/IP.

3089:  Power unit for 3081, 3083, 3084 and 3090 processors. Withdrawn December 1995, with service discontinued September 1998 for Model 001 and June 2001 for Model 003.

308x:  Large mainframe family. Obsolete.

3090:  Large water-cooled mainframe family. Obsolete.


3092:  The processor controller for the 3090 mainframe. Later models (February 1989 on) included such goodies as duplicate components (for resilience), internal disk, and optical disk drives to replace previously mandatory 3370 DASD, and tape drives. On the ES/9000 range the 3092 function is provided by the SCE.

3097:  Power coolant and distribution unit for the 3090 and ES/3090 processor units. Withdrawn December 1995.

3101:  IBM asynchronous terminal originally superseded by the now obsolete 3164.

3104:  Display terminal for the 8100 Information System and 4331 processor. Withdrawn April 1988. See also 43xx.

3112:  12ppm laser printer. Replaced by the 43xx family of printers October 1996.

3115:  Processing unit for main and control storage for the S/370 model 115. The 115 was the smallest and one of the last of the S/370 models announced, intended as both an entry model and to replace any S/360 Model 20s where the model 125 was too expensive. Withdrawn June 1981. See also 3125.

3116:  16ppm laser printer for the AS/400, S/370 and S/390. Replaced by the 43xx family of printers October 1996.

3117-9:  Image scanners, made by IBM in Japan and originally announced mid 1986.

3125:  Processing unit for main and control storage for the S/370 model 125. First came out in the early 1970s and long obsolete. Rarely had more than 200KB of memory.

3130:  30ppm laser printer. Announced January 1995. Withdrawn March 2000.

315x:  ASCII terminals with built-in emulations for ten non-IBM terminals (it was the first IBM product that explicitly recognized that there are other vendors out there in the marketplace). Cheap – by IBM standards – and did very well in the market. 3151 replaced by 3153. See also InfoWindow.

3160:  InfoPrint 60 printer 60ppm printer announced May 1996 and withdrawn October 2001.

3161-3:  Monochrome ASCII terminals (green or ambergold) for basic DP and text applications. All three models were withdrawn between January 1989 and July 1990.

3164:  Entry-level color ASCII display station (replaced the 3101). Capable of emulating the 3101 and a number of terminals manufactured by other vendors. Withdrawn June 1996.

3170:  InfoColor 70 color printer. Announced October 1995.

3172:  MicroChannel-based (MCA) interconnect controller which replaced the 8232 LAN channel gateway, and provided VTAM channel attachment of LANs to mainframes. It also effectively obsoleted the 3737. Includes support for TCP/IP, Ethernet, MAP, TRN, FDDI, and ESCON (using an adapter), and for CTC connection of remote hosts. IBM touts the ESCON connectivity feature as allowing channel connection to a wide range of IBM and other industry standard LANs. June 1992 announcements included 80486 processor and other performance improvements. June 1993 announcements included native ESCON support, faster processor, and more hard disk capacity. HPR support added March 1996. ATM support with the TURBOWAYS ATM Adapter announced September 1996.

3174:  IBM cluster controller, originally announced mid 1986. Supports ASCII and 3270-type displays. Can connect to TRN, mainframes, and AS/400, supports 16Mbps TRN, and monitor attached devices. Positioned by IBM as an establishment controller with a much wider range of connectivity (async, Ethernet, TCP/IP, etc) than a standard terminal controller. The channel-attached 3174s announced in September 1990 support ESCON; ISDN adapter was announced January 1991; May 1993, new models were announced, providing more multiprotocol support, and February 1994, the thing acquired Frame Relay, APPN, and remote bridging. All 3174 models had been withdrawn by September 2000, but support is still available. See also 8250, Tokenway.

3174-Peer:  RPQ product which enabled PCs to communicate with peer PCs and servers (attached to a Token Ring network) and with host resident data and applications – all over existing coax. Obsolete.

3178:  A display unit in the 3270 family. Announced early 1983, and became the standard end-user screen in IBM installations. Obsolete.

3179:  Color graphics terminal. Color version of the 3178. Obsolete.

3180:  3270 family monochrome screen. Effectively replaced most of the 3278 (3180/1) and 5251 (3180/2) families of terminals with a lower price, higher function terminal. Most noteworthy feature was its ability to run as any of the four 3270 Models (screen sizes); its programmable key feature allowed single key entry of frequently-used lengthy key sequences. Replaced by the 3206.

3191:  Entry model 3270 screen. Withdrawn October 1989.

3192:  15 inch monochrome (black on white) and/or color terminal. Announced February 1988. Withdrawn October 1989 and replaced by the InfoWindow Graphics-5 3472. See InfoWindow.

3193:  High-resolution, monochrome 3270-compatible display. Withdrawn January 1992.

3194:  High-function TP terminal. Monochrome or color 3270 with integrated diskette drive. Supports windows to up to four host sessions. Available with ASCII support. Withdrawn January 1994.

3196:  Twinax attached monochrome (green or ambergold) display for basic DP and text applications. Withdrawn May 1990.

3197:  System/3x version of the 3192. Available in color and monochrome versions. Withdrawn October 1989.

3203:  1979 vintage 1,200 lpm train printer for the mainframe that effectively replaced the 1403. Obsolete.

3205:  IBM color display console for attachment to 4361 and 4381 processors (43xx) equipped with an Operator Control Panel. Withdrawn January 1994.

3206:  IBM Display Station. Announced January 1988. Withdrawn June 1996, although the Model 110 is still supported.

3210:  IBM selectric console printer-keyboard. A keyboard and printer unit for the S/370. Obsolete.

3211:  2,000 lpm train printer for mainframes. Obsolete.

3215:  Standard datastream for line mode terminals, just as 3270 is standard for full screen mode.

3216:  Interchangeable cartridge for the 3211. Obsolete.

3262:  Small line printer (launched in 1982) for mainframes. Up to 650 lpm. Replaced by 6252.

3268:  Small serial printer (340 cps) in the 326x series. Available in monochrome and color versions. Obsolete.

3270:  IBM’s principal family of pretty dumb (functionally challenged), block-mode, synchronous screen and printer terminals, which became an industry standard and the subject of much imitation first from plug-compatible suppliers then PC-based terminal emulation software. The 3270 family includes cluster controllers, displays, and printers.

3270 ASCII Application Access:  A VTAM application for MVS and VM that provided access from a 3270 to the non-SNA world by emulating ASCII terminals. Announced March 1996. Withdrawn March 2000.

3270 Bridge:  Maps BMS to HTML. Introduced in Version 1.2 of CICS Transaction Server for OS/390, and now a part of CICS Transaction Server for VSE/ESA, as well. A newer LINKable 3270 Bridge allows 3270 transactions to be driven using client ECI, host EXCI calls and DPL or EXEC CICS LINK.

3270 datastream:  The format used by the 3270 family of terminals and controllers. An industry standard for communications and much used to make PCs look like dumb terminals.

3270 emulation:  The ability of terminal emulation software to replace 3270 hardware, often including printers as well as terminals. See also tn3270.

3270 PC:  Obsolete version of the PC which provided workstation facilities. Could run four 3270 sessions, two local notepad sessions, and one PC-DOS session. Pretended to be a 3290 for communications purposes.

3270 PC/AT:  More powerful version of the 3270 PC. No longer marketed.

3270 PC File Transfer Program:  Part of z/OS.

3271:  Original 3270 remote cluster controller using BSC line protocol. Support ended June 1996.

3272:  Original 3270 local (channel attached) cluster controller. Responds directly to channel commands, and interrupts the channel for attention. Support ended June 1996.

3274:  Range of cluster controllers replacing the 3271 and 3272, and capable of emulating both. Available with various amounts of storage, and local and remote attachment options. Functioned as an SNA PU2, and also supported non-SNA operation. Replaced by the 3174.

3275:  Remote BSC screen/printer controller with dial-up facilities. Used as a specialist device for remote operation of 43xx processors. Support ended June 1996.

3276:  Hard-wired BSC/SDLC1 integrated screen and controller for small clusters (up to 8 terminals). Obsolete and largely replaced by the 8-port 3274.

3277:  Screen (head) for a 3271/3272 controller. Support ended June 1996.

3278:  The original monochrome screen (head) for 3274/3276 controller. Obsolete and largely replaced by the 3178 and 3180.

3279:  Color screen. Effectively a color version of the 3278. Replaced by the 3179.

3287:  Printers for the 3270 family. Obsolete.

3290:  User terminal with a large, flat, plasma panel screen (62 x 160 characters) conforming to the 3270 standard; supports multiple sessions, applications, graphics etc. Highly regarded device but horrifically expensive, and was withdrawn early 1989. The 3290 continues to be emulated, particularly its multiple session feature, in a number of third-party products.

3295:  3270-standard plasma monitor. Obsolete.

3299:  Multiplexer allowing 3270 family devices to share one coax, fiber optic (ESCON), or IBM Cabling System cable to their controller. A versatile little beast that not only allowed savings in cabling, but also increased the allowable distance between terminal and controller. Ironically, it was the first model announced, -002 in September 1985, that was the last to be withdrawn, in September 2000. All models are still supported.

3330:  1970s IBM DASD. Obsolete.

3340:  1970s IBM DASD. The first using the Winchester technology, but best known for the operator-removable sealed assembly that combined heads and disk pack and was shaped very much like the starship Enterprise. Obsolete.

3350:  IBM DASD for mainframes. The 3350 had a capacity of 635Mbytes, and was withdrawn in September 1988.

3363:  Optical disk drive for use with PS/2. Uses 200MB removable WORM cartridges. Joint development between IBM and Matsushita/Panasonic. Withdrawn March 1991.

3370:  Obsolete and generally unloved DASD for IBM’s mid-range machines. Introduced in 1979, and withdrawn in September 1988.

3375:  DASD. Similar to 3370 but with a few extra features to improve availability, data sharing, and performance, most notably a few cylinders with a set of fixed heads dedicated to each. Obsolete.

3380:  IBM mainframe DASD. 14 inch form factor (i.e., diameter of disk). The 3380 used thin film heads for the first time, which caused production difficulties and a problematic early life. The original 3380 had a capacity of 1.26Gbytes per spindle and there were numerous options including double and treble densities, and a half density high performance variant. Superseded by the 3390.

3390:  High-capacity DASD announced November 1989. Thin film heads, coated 10.8 inch platters, and vastly better environmentals than the 3380 which it replaced. September 1991 IBM announced the 3990-3 which increased capacity by a further 50% for same floor space, and represented a price/capacity improvement of about 23%. In effect replaced by RAMAC2 mid 1994, then withdrawn April 1996. See also 3390-9.

3390-9:  DASD (aka Fat DASD or Jumbo DASD) announced in May 1993. Optimized for cost and capacity, not performance, and holds three times as much data as a standard 3390 at about half the cost per megabyte – but still a lot more expensive than tape. Gets its extra capacity from having three logical 3390 tracks per physical track, but rotates at about one-third the speed. Uses thin film disk technology and second-generation MR heads. A cheaper version with fewer heads was announced in September 1993. All models withdrawn December 1996.

3410/3411:  Defunct magnetic tape system for the System/38 and small S/370 mainframes.

3420:  Magnetic tape subsystem. IBM’s original standard 9-track reel-to-reel tape drive for mainframes. First shipped in late 1973 and sold in large numbers. Usually used with autoloader tape seals that allowed the tape to be mounted on the drive without opening or hand threading of tape. Though its place in the hearts of IBM salesmen has long since been usurped, there are still numerous 3420s – and PCM equivalents – in use. The 3420 hangs on because it is still used as an industry standard for data interchange, a role that IBM had earmarked for the 3480 cartridge.

3422:  System/38 and 43xx tape drive bought by IBM from Siemens on an OEM basis. Withdrawn July 1990.

3430:  Magnetic tape drive for sub-MVS machines, such as the 4331 and other low-end 43xx machines. Withdrawn December 1989.

3431:  Rewritable optical disk drive announced November 1992. Uses ISO/ANSI standard cartridges, and attaches to a PS/2 SCSI port. Withdrawn July 1995.

3440:  4mm 2GB SCSI tape cartridge drive. Withdrawn January 1996.

3445:  8mm 5GB cartridge tape drive. Withdrawn March 1997.

3447:  Digital linear tape library for IBM Netfinity and PC server systems. Announced September 1997. Withdrawn December 1999.

3449:  8mm tape library for IBM Netfinity and PC server systems. Announced September 1997. Withdrawn July 2000.

3450:  1/4 inch cartridge drive with SCSI interface. Announced March 1993. Withdrawn September 1997.

3466:  Network Storage Manager. Network-attached storage system based on SeaScape architecture. Intended for automated backup and recovery in heterogeneous environments. On-going series of models first announced October 1996, the most recent of which are still available.

3470:  The InfoWindow family of displays for the mainframe. Includes monochrome (3471) and color models, and a multi-session model (the InfoWindow Graphics-5) which runs one graphics and five alphanumeric sessions simultaneously and replaced the 3192. More or less the same as the 3477 family of AS/400 displays. Replaced by InfoWindow II, which itself is now obsolete, too.

3471:  InfoWindow monochrome mainframe display. Withdrawn January 1992.

3472:  InfoWindow workstation. Replaced by the 3482.

3476:  InfoWindow monochrome monitor for System/36, System/38 and AS/400. Replaced by the 3486.

3477:  The InfoWindow family of displays for the AS/400. More or less the same as the 3470 family of mainframe displays. Replaced by the 3487.

3480:  Cartridge tape system. At one time IBM’s main line of 18-track cartridge tape systems for the mainframe and AS/400. Introduced early 1984 to replace the conventional reel-to-reel 3420. July 1989 IBM announced Improved Data Recording Capability (see IDRC) which increased capacity up to five-fold, and transfer rate by up to 70%. 3M took over manufacture of 3480 cartridges from IBM in March 1989. RS/6000 support announced in May 1993. Obsoleted by the 3490.

3481:  InfoWindow II display station which replaced the 3471/3472. Itself replaced by the 3482.

3482:  InfoWindow II display station. Replaced by the 3483.

3483:  Modular display station. InfoWindow II mainframe display station. The last model was withdrawn in August 2000.

3486:  InfoWindow II display station which replaced the 3476/3477. Announced September 1992. Withdrawn May 1999.

3487:  InfoWindow II display station which replaced the 3477. Announced September 1992. Withdrawn May 1997.

3488:  InfoWindow II modular display station. Withdrawn August 1995.

3489:  InfoWindow display with printer announced October 1994. The last model was withdrawn May 2000.

3490:  Cartridge tape drive announced September 1989 for the AS/400, and October 1989 for the mainframe. It’s a rack-mounted version of the 3480 with which it is fully compatible, although it takes up about half the floor space and has IDRC as standard. Comes with a cartridge loader holding up to 6 cartridges, and supports the ESCON architecture. February 1991 IBM announced the 3490E with 36-track, bi-directional reading/recording, 9Mbyte/sec transfer, bigger buffer, and faster IDRC. SCSI interface announced October 1992, and RS/6000 support in May 1993. More SCSI 3490Es were announced for AS/400 and RS/6000 in February 1994. Obsoleted by the 3590 in April 1995.

3494:  Tape library system announced September 1993 for the eserver iSeries 400, zSeries 900 and pSeries. It’s considerably more compact than the Brobdingnagian 3495, and is a genuine competitor (albeit a belated one) to the StorageTek ATLs. Virtual Tape Server (VTS) models were first announced September 1996.

3495:  Tape Library DataServer. IBM ATL announced May 1992. Consists of a row of tape transports (up to 64) and a robot which scuttles up and down on rails feeding the drives with 3490-type cartridges. Supported by ESCON and DFSMS. When it was announced pundits reckoned it was too late, too big, and a touch over-engineered. The market seemed to agree; by mid 1994 sales were under 200 systems, compared to StorageTek’s 6,600. Withdrawn April 1998, though still supported by current operating systems. Most models were replaced by the 3494. See also BTLS.

3499:  IBM labeled and initialized data cartridges for the 3480 and 3490E. Announced October 1997.

3509:  ISA external CD-ROM drive. Withdrawn March 1994.

3510:  CD-ROM drive. Announced March 1990. The most recent model is still available.

3511:  PS/2 external storage enclosure. A floor standing expansion unit for SCSI devices, originally announced October 1990, with the most recent model still available.

3514:  High availability disk array for RS/6000. Provides RAID 0 data striping, and RAID 5. Withdrawn September 1995.

3515:  Disk subsystem for the PS/2. Withdrawn June 1995.

3517:  SCSI storage enclosure. External disk drive and media options for the IBM PC server system. Lockable door expansion chassis with two 5.25 inch half height media bays and five option hot-swap disk drive bays. Announced January 1996. Withdrawn November 1999.

3518:  PC server enterprise expansion enclosure with 20 media bays. Announced January 1996. Withdrawn November 1999.

3519:  PC server rack storage expansion enclosure. Contains hot-swap drive bays. Announced May 1997.

3520:  Netfinity EXP10 storage expansion unit. External, rack mountable data storage unit, with hot-swap drive bays. Announced September 1997. Withdrawn June 2000.

3527:  SSA entry storage subsystem for PC servers. A stand-alone enclosure for IBM’s Serial Storage Architecture hard disk drives. Announced June 1997. Withdrawn November 1999.

3532:  PS/2 2.3GB external SCSI tape drive. Withdrawn March 1994.

3541:  PS/2 communication Cartridge. Withdrawn March 1993.

3570:  Magstar MP (multipurpose) magnetic tape subsystem for the AS/400 and RS/6000. Announced September 1996.

3575:  Magstar MP (multipurpose) Tape Library Dataserver, a family of SCSI-attached Magstar tape library systems aimed at midrange open systems and network servers. May be used stand-alone or attached to the 3466 Network Storage Manager. Announced June 1997.

3590:  The stand-alone tape drive announced April 1995 which uses the Magstar tape mechanism. Initially launched as a single drive, and as a mini-library with a ten-slot cartridge loader using a new random-access mode of operation. Comes in both mainframe and mid-range versions and is positioned as the replacement for the 3480 and 3490/90E devices. Can be channel attached, ESCON attached, and installed in 3494 and 3495 libraries.

3591:  Tape Control Unit, which attaches Magstar 3590 tape subsystems to System/390 ESCON channels at 17MBytes per second. Has four logical channels and emulates 3490E. Announced March 1996. Replaced, in April 1998, by a 3590 model with built-in tape control unit.

3599:  Magstar 3590 data cartridges. Announced March 1997.

360:  The one that started it all in April 1964. The System/360 (S/360) was IBM’s first general purpose mainframe, and the architectural principles used in the 360 live on in the IBM mainframe architecture. Why 360? To denote a full circle, 360 degrees, indicating the then-revolutionary approach of having one machine architecture for both scientific and business computing.

3603:  Defunct terminal attachment unit. Withdrawn November 1987.

3604:  Defunct display.

3612:  Printer for the 3600 or 4700 Finance Communication System. Withdrawn June 1983.

3624:  IBM cashpoint (hole in the wall/ATM) machine. Official IBMspeak is Consumer Transaction Facility. Withdrawn January 1990. See 473x.

370:  Generic term for a generation of IBM’s mainframe architecture. Less commonly: System/370 (S/370). The number 370 was meant to imply 360 for the 1970s. Models with 370 architecture include 370/xxx, 9370, 43xx, 303x, 308x, 3090. Replaced first by System/390, then the eserver zSeries 900.

3704:  Smaller version of the 3705 FEP – obsolete but still in use.

3705:  Small IBM computer customized for use as a communications FEP supporting physical management of the network. Also usable as a remote communications controller or network node in multi-system environments. Control software is NCP for SNA networks and EP for pre-SNA networks. Obsolete – replaced by the 3725 FEP.

3708:  Network conversion unit (IBMspeak for a protocol converter) for converting ASCII and SDLC1/3270. Also acts as a multiplexer to support line concentration. Withdrawn December 1993.

370 Accommodation:  A VM/ESA and z/VM function that allows most 370 mode software to run in XA1 or XC mode. Useful given that recent hardware no longer supports 370 mode operation.

3710:  Network controller for concentrating PU2 nodes onto an FEP with some protocol conversion (up to 31 lines). Withdrawn September 1987.

3720:  Low-end communications FEP, compatible with the 3705/3725 FEP family. Introduced May 1986, withdrawn September 1990.

3721:  Expansion unit for 3720. Withdrawn September 1990.

3725:  Enhanced and more powerful version of the 3705 communications FEP. Obsolete – replaced by 3745.

3727:  Operator console for the 3745. Withdrawn December 1988.

3728:  Matrix switch (60 x 60), located between controller and modems, for assigning traffic to leased lines. For use with IBM FEPs. Can be used to configure, reconfigure, monitor, and test large networks. Controllable remotely using MSHF. Withdrawn September 1994.

3730:  Long-dead IBM office automation system based on 3790 hardware. Never really took off, and was superseded by the 8100 with DOSF, which itself bit the dust without making any real impact on the world.

3732:  Defunct display.

3737:  Remote channel-to-channel unit. Enables mainframe-to-mainframe links at speeds up to 2MB/second over high-speed T1 communications lines. Usable with up to 12 processors. Able to work with NetView. Fairly limited range of facilities – no dynamic reconfiguration, CPU to CPU only (it can’t be used as a channel extender for peripherals), only supports one link at a time. Withdrawn February 1993. See also Channel extender.

3745:  See 3745/6.

3745/6:  IBM FEPs announced in January 1988. Enhancements June 1991 included Ethernet board, LAN router/bridge, TCP/IP, and Frame Relay. An entry level model was introduced in March 1992, APPN and ESCON connectivity in September 1992, and Frame Relay in May 1994. October 1994, the 3746-900 was announced with the promise of a successor machine that would be able to run without the use of NCP (see Nways 950). See also 3765.

3746:  See 3745/6.

3750:  See 1750/3750.

3765:  At one time a rumored replacement for the 3745, which would support large numbers of high-capacity lines – FDDI and 16Mbps TRN, T3 (see T1), Frame Relay, and ESCON. The development of the router market pretty much put the kibosh on it. See Nways 950.

3767:  Defunct hard copy (typewriter) terminal. The model number is still used to refer to a particular type of very dumb terminal.

3770:  SNA, and sometimes BSC, compatible family of RJE/batch terminals. The boxes are obsolete but the 3770 protocol is used for high-speed print applications because it’s able to do file transfers up to 20 times faster than conventional 3270 systems.

3777:  BSC RJE terminal. Withdrawn April 1990.

3780:  See 2780/3780. Withdrawn February 1986.

3790:  Outmoded IBM distributed processing system, vintage early 1980s. One of IBM’s less successful products and now largely forgotten. Superseded by the 8100 (since superseded by the System/36, since superseded by the 9370, since superseded by the AS/400, since superseded by the eserver iSeries 400, and/or networked PCs).

37xx:  Any or all of the 3704, 3705, 3720, 3725, 3745/6 family of communication controllers, also known as FEP.

3800:  Extremely fast (up to 215 pages per minute), 240 x 240dpi, laser/electrographic, mainframe-attachable printing subsystem. Typically used where print requirements exceeded 1 million feet/month, and sub-correspondence-quality print was acceptable. Model 1 was announced way back in 1975, and it was progressively and regularly updated until it was withdrawn from marketing March 1991. The replacement, the 3900, was announced October 1990.

3803:  Control unit for 3420 magnetic tape units. Withdrawn January 1988.

3812:  IBM page printer, announced mid 1986. Prints at 12 pages per minute, and uses LED technology. Withdrawn October 1991.

3814:  Switching Management System. Provides automated switching of control units and processor channels. Withdrawn November 1991.

3816:  IBM 24ppm, APA, 240 x 240dpi, desktop AFP page printer based on LED technology. Attachable to PC, or to System/3x or AS/400 (using twinax). Replaced by the 3930, and withdrawn March 1994.

3820:  IBM page printer. 240 x 240dpi resolution. Supports AFP. Up to 20ppm. September 1992 was no longer available new, but IBM would sell you a new or refurbished one if you asked nicely. Finally withdrawn January 1994.

3825:  58ppm APA (240 x 240), cut-sheet laser printer. 240 x 240dpi resolution. Supports AFP. Originally announced April 1989, with the ability to print IOCA or GOCA formats announced October 1990. Withdrawn August 1995.

3827:  92ppm cut-sheet printer based on the Kodak 1392 LED print engine. 240 x 240dpi resolution. Supports AFP. Initially had a poor reputation for reliability, although eventually got better. Withdrawn August 1995.

3828:  IBM MICR printer. Channel-attached, cut-sheet, 92 impressions per minute, 2 million impressions per month. It’s basically the 3827 with MICR capability. Announced October 1990. Withdrawn October 1999.

3829:  Channel-attached IBM/Pennant AFP printer, announced June 1993. Uses a 14 inch LED print head, and has facilities for duplex printing. Does up to 92ppm. Withdrawn May 1997.

3830:  Storage control unit. Withdrawn November 1986.

3833/4:  IBM microprocessor-based modems operating at 2400 bits/second on leased lines. Obsolete.

3835:  88ppm IBM continuous stationery page printer OEMed from Hitachi. 240 x 240dpi resolution. Supports AFP. Channel-attached to the mainframe. Ability to print IOCA or GOCA formats announced October 1990, and a MICR interface announced October 1990. Withdrawn September 1997.

3848:  Cryptographic unit. Provided data encryption capabilities for file and communications applications. Withdrawn September 1991.

3851:  Mass storage system with a jukebox-type mechanism to handle special data cartridges. Capable of holding huge amounts of data. Introduced in the early 1970s. Not a success and was withdrawn in November 1986. The rights were sold to Masstor which repackaged and remarketed it as the M960.

3852:  Color ink-jet printer. Withdrawn May 1988.

386:  Abbreviation for 80386. 32-bit microprocessor chip design from Intel. Introduced in 1985, though it took a few years until the price dropped sufficiently for really large sales numbers. IBM started making its own 386s under license from Intel in mid 1988. Replaced by the 486.

3863:  IBM microprocessor-based modem operating at 2400 bits per second. Withdrawn May 1987.

386SLC:  October 1991 IBM-built version of Intel’s 386SX.

386SX:  Abbreviation for the 80386SX. Version of the Intel 386 which used 32 bits internally but 16 bits externally (the rest of the machine thinks it’s talking to a 286). IBM announced its own 386SXs in October 1991 – 386SLC.

386x:  IBM modems now obsolete.

3880:  Storage controller. IBM’s original cache controller for 3380 and 3350 DASD. A relatively unsophisticated and expensive device, but its replacement by the 3990 was delayed by early technical problems with the latter. Finally withdrawn April 1989.

389x:  The Model XP document processors. The 3892 is a microfilm processor, the 3897 is an image capture unit, and the 3898 is an IPRS (Image Processor Recognition System). Used as part of IBM’s cheque handling (see HPTS) and DIP products. Withdrawn except for a newer model of the 3897.

390:  See System/390.

3900:  APA, non-impact, 240dpi mainframe printing subsystem announced October 1990. Uses a Hitachi print engine. About 7% faster and much smaller than the venerable 3800 which it replaced. It does up to 229 impressions per minute (an impression is the same as a page), and up to 5.6 million standard 8 inch forms per month. The 3900 Advanced Function Printer with Enhanced Print Quality was announced in February 1994, and included various options to produce better quality print. Withdrawn August 1997. Replaced by the 4000.

3912:  12ppm, 600dpi page printers for connection to mainframe, AS/400, and LANs. Withdrawn December 1995.

3916:  Multifunction, table-top, 16ppm page printer for mainframe and AS/400. Introduced September 1993. Replaced the 3816. Withdrawn December 1995.

3930:  Multifunction, table-top, 30ppm page printer for mainframe, AS/400, and RS/6000. Introduced September 1993. Replaced the 3816 and replaced by the 3130 June 1996.

3935:  Printer from Pennant Systems, announced mid 1993. 35ppm, and uses a Xerox print engine with a RISC-based controller. LAN attachable via TRN, TCP/IP, or Ethernet. Replaced by the 3130 April 1996.

3990:  DASD storage controller announced in 1987. Offered a series of enhancements over the 3880 (which it replaced), particularly in the top-end models, including Fast Write, Dual Copy, and very large cache. Models 2 and 3 support the ESCON architecture. Enhancements in May 1992 included concurrent copy, sequential data striping, dynamic cache management, and enhanced fast dual copy. May 1993 the 3990-6 was announced with CMOS logic, more logical connections (from 4 to 32 LPARs), more non-volatile storage (to improve DASD Fast Write), and lots more cache (which is particularly helpful for IMS); March 1994 3990-6 enhancements included Remote Copy, record level caching. March 1996 3990-6 enhancements included XRC, PPRC, and support for 3380 formats. June 1996 the thing gained Sequential detect. Replaced by the 2105.

3995:  The Compact Optical Library Dataserver. Optical disk system originally announced May 1991 as a replacement for the 9246/7. Available in both fully rewritable and WORM1 forms. March 1993, increased capacity models announced; May 1993, models which emulate the 3390 disk were announced. ESCON support became available early 1994. The mainframe models cost about one half to one fifth of the price of conventional DASD but perform much worse, although some of the performance problems inherent in writing to optical disk are mitigated by staging data via a conventional magnetic DASD. February 1994, a raft of new models for the AS/400 and RS/6000 were announced. Cartridges are interchangeable with the 7209. SCSI-2 models were introduced in March 1996. Today, there are four distinct families of 3995: zSeries 900, iSeries 400, pSeries and LAN-attached. See also IAFC.

4000:  InfoPrint 4000 printer. Several families of very high speed laser printers that began with the 3800 in 1975, and saw the 4000 replace the 3900 in October 1996. So fast, in fact, that paper is supplied on rolls because it would take longer to load a box of paper than it would take to print. Speeds as high as 1,002 ips (impressions per second, where each side of a page is an impression).

4004:  Intel’s first microprocessor, released in 1971. Powered the Busincom calculator. Replaced by the 8008 in 1972. Ran at 108KHz.

4005:  InfoPrint Hi-Lite color printer. Used to selectively highlight important areas of billing statements, contracts, and insurance policies. Announced May 1997.

4019:  The IBM LaserPrinter. Withdrawn January 1994.

4028/9/1:  Version of the 4019 LaserPrinter for attachment to the AS/400 and to 3270 controllers. Withdrawn December 1995.

4029:  Family of laser printers announced October 1991. Built by Lexmark and sold by IBM. Up to 600 x 600dpi (using the LexRes technology), and 4-10ppm. Withdrawn June 1993.

4033:  LAN interface (October 1991) developed by Lexmark and sold by IBM. Connects 4029 printers to an Ethernet or TRN LAN. Withdrawn January 1996.

4035:  Lexmark WinWriter 600 printer which incorporates Microsoft Windows printing system. Withdrawn June 1996.

4037:  Desktop page printer with a maximum output of 5ppm. Withdrawn January 1996.

4039:  Lexmark LaserPrinter. Withdrawn June 1996.

4049:  Lexmark Optra family of desktop printers. Withdrawn March 1996.

4055:  InfoWindow display. Touch screen system based on a PC with optional CD-ROM videodisk player and special screen. Designed mainly for training, product merchandizing, public information services, etc. Withdrawn January 1992.

4070:  360 x 360dpi Lexmark ink-jet printers launched in June 1992. Withdrawn January 1994.

4072:  The ExecJet printer. A wide carriage 64 nozzle letter quality ink-jet printer. 360 x 360dpi, 150-600 cps, 18 fonts. Replaced by the ExecJet II – the 4076. But not actually withdrawn until April 1996, along with the 4076.

4076:  Lexmark ExecJet II monochrome ink-jet printer. Withdrawn April 1996.

4077:  Lexmark WinWriter color ink-jet printer. Withdrawn June 1996.

4079:  Lexmark color ink-jet printer announced October 1992. Withdrawn May 1996.

40-bit encryption:  DES encryption using a five-byte key that would require 10 to the 12th power attempts to guess. Possible in a reasonable time with today’s computers. Until recently, the most secure form of DES that could be exported outside the US and Canada.

4100:  A junior version of the 4000 printer family, with maximum speed of 762 impressions per minute (ipm). Two sets of models, labeled Premium Quality and High Quality. Maximum page width is 19.5 inches. With the Signature Page feature, page length can be 54 inches. Connects via TRN, 10/100/Gigabit Ethernet, FDDI, S/370 channel, ESCON and FICON. Supports PSF in z/OS, z/VM, VSE/ESA and iSeries 400 environments, and Infoprint Manager in AIX and Windows NT/2000/XP environments. Announced July 2001.

4201/2/7/8/12:  Proprinter matrix printers for use with PCs. 4202 has a wide carriage. 4207/8 are 288 cps, 24-wire printers for use with PCs. Obsolete.

4210:  200 cps matrix printer for twinax attachment to System/3x and AS/400. Withdrawn March 1992.

4214:  Medium-speed printer. 30 cps, near letter quality, draft at 200 cps. Obsolete.

4216:  Personal Page Printer and Personal Page Printer II. 6ppm high quality (300 x 300dpi) desktop laser/electrographic printer. Uses a Ricoh engine. The Personal Page Printer II is PostScript compatible. Withdrawn October 1991.

4224:  50-600 cps wide carriage, bi-directional matrix printer. Color available. IPDS compatible. Withdrawn June 1995.

4226:  Heavy duty, unattended, serial matrix printer, vintage October 1991. Up to 533 cps. Built by Lexmark, and sold by IBM. Withdrawn May 1996.

4230:  Family of AFP serial, impact, dot-matrix printer. 375/480 cps. Originally for the AS/400, but mainframe versions announced February 1993. All 12 models are still available.

4232:  Heavy duty, unattended, 600 cps, impact matrix printer for connection to mainframe, AS/400, RS/6000, and PS/2. Introduced September 1993.

4234:  200-800 lines per minute, dot-band, floor-standing printer for twinax (System/3x or AS/400) or coax (3174/3274) attachment, or serial/parallel attachment to the 9372, RS/6000, PC, PS/2, or RT PC. Withdrawn May 1994. Replaced by the 6408.

4245:  2,000 lpm, 1983-vintage band printer for attachment to 3274, 4700, and mainframe (channel attachable), or System/3x. More or less replaced by the 6262.

4247:  Heavy duty serial impact matrix printer capable of printing at speeds up to 700 characters per second. Announced September 1995 with the most recent model still available.

4248:  High-speed (up to 4000 lpm) print-band printer for channel attachment to mainframe. Withdrawn December 1992.

4250:  High resolution (600 PEL per inch), 92 cps, APA electro-erosion printer for publishing applications. Introduced in 1983, and long since withdrawn from marketing. It’s estimated that just 75 were sold, mainly because it was a professional printer’s/compositor’s tool, but was being sold to DP people.

4303:  Network Color Printer. Included Adobe PostScript capabilities. Announced June 1996. Withdrawn October 1999. See also Network Printer.

4312:  Network Printer 12. Laser printer with a maximum output of 12 ppm. Announced June 1996. Replaced by the 4912 in December 2000.

4317:  Network Printer 17. Laser printer with a maximum output of 17 ppm. Announced June 1996. Replaced by the 4322 September 2000.

4321:  See 43xx.

4322:  Infoprint 21. A laser printer so named because of its 21 ppm speed, replacing the 4317. Announced April 2000, withdrawn with no replacement September 2001, but supported until September 2006.

4324:  Network Printer 24 and 24PS. Laser printers with a maximum output of 24 ppm. The 24PS has PostScript capabilities. Announced June 1996. Replaced by the 3130 in June 1998.

4331:  See 43xx.

4332:  Infoprint 32/40. Announced August 1998. Withdrawn September 2001.

4341:  See 43xx.

4361:  See 43xx.

4370:  InfoPrint 62 continuous forms printer. All points addressable, electrophotographic printers available in 240 or 300 dpi. Announced May 1997.

4381:  See 43xx.

4391:  Widely-used name for the successor to the high-end 43xx – also known as Cortina or Harmony. Eventually appeared as the mid-range ES/9000 – the 9121.

43xx:  IBM’s family of small to medium mainframes. Includes 4321, 4331, 4341, 4361, 4381, and many incarnations thereof. Only the 4381, which replaced the 4341, was still around by 1990, but it too disappeared soon thereafter.

4520:  Infoprint 1120. Monochrome 1200 dpi laser printer with a maximum speed of 20 ppm. First page out speed is 9 seconds. Connect to TRN, Ethernet, twinax and coax, and have an IPDS option. Announced June 2001.

4525:  Infoprint 1125. Monochrome 1200 dpi laser printer with a maximum speed of 25 ppm. First page out speed is 9 seconds. Connect to TRN, Ethernet, twinax and coax, and have an IPDS option. Announced June 2001.

4530:  Infoprint 1130. 30 ppm laser printer. Announced June 2001.

4540:  Infoprint 1140. 40 ppm laser printer. Announced June 2001.

4545:  Infoprint 1145. 45 ppm laser printer. Announced June 2001.

457x:  Processors in the System/88 product line.

458x:  The peripherals for the System/88 product line.

459x:  Processors in the System/88 product line (announced September 1988).

4612:  The Sure Point Mobile Computer. A pen-based handheld wireless PC for POS applications, announced June 1996 and withdrawn by the end of 1997.

4614:  The SureOne point of sale terminal. Announced January 1996.

468x:  IBM point-of-sale system announced 1986. Includes the 4684 system and the 4683 terminal which runs under PC-DOS. In June 1990 IBM promised all sorts of additional functions including frequent shopper awards – whatever they might be. September 1990, IBM announced a multi-user environment, and X.25 and LU6.2 support. Programmed using Retail Workbench/2. Superseded by the 469x.

469x:  POS terminal family based on the MicroChannel PS/2 and running under OS/2, PC-DOS, or FlexOS when originally announced in June 1993. Superseded the 468x and continues to be updated technologically as new models are offered.

4700:  Series of specialized terminals for banks and financial institutions. Obsoleted in September 1993, when 4700 emulation on a PS/2 was announced.

4708:  Disk unit. Obsolete.

4712:  Transaction printer. Dot matrix printer designed to print on the forms used in financial teller applications. Announced November 1987. Withdrawn April 1999.

4715:  Continuous forms printer. Withdrawn August 1988.

4722:  Specialized document printer for passbook applications. Incorporates magnetic strip reader/encoder. Withdrawn December 1996.

473x:  Personal Banking Machine (hole-in-the-wall machine/ATM to mere mortals). See Consumer Transaction Facilities.

4753:  Network Security Processor built around Intel type chips. Provides DEA/DES cryptographic support and uses special packaging to defeat electromagnetic, chemical, and physical attacks on cryptographic keys and sensitive data. (How do you mount a chemical attack on a cryptographic key?) You also need the 4753 z/OS support program on the mainframe. Enhanced January 1993 with data scrambling, key distribution management, and session-level encryption. Part of TSS. Withdrawn June 2000.

4754:  Security Interface Unit. Provides security of access to PS/2s and PCs. Comprises a reader for your IBM Personal Security Card, 12-key keypad, and gives access to optional signature verification feature on the 4755. Can also be used to set or change 4753 functions. Part of TSS. Withdrawn June 2000.

4755:  Cryptographic Adapter for use with the 4754 Security Interface Unit. Includes signature verification feature which measures signature dynamics (acceleration and pressure) rather than signature shape. Part of TSS. Obsolete.

4758:  PCI Cryptographic Coprocessor. Programmable PCI bus card with Data Encryption standard (DES) and RSA cryptographic processing. The cryptographic processes are performed within a secure enclosure on the card. This allows Secure Electronic Transactions (SET) to be executed within the enclosure. Designed to work with security sensitive applications such as IBM’s CommercePoint Payment system to enable processing of large volumes of Internet transactions at high speed. Available for z/OS, AIX, OS/400, Windows NT/2000 and OS/2. Announced June 1997.

4770:  The IJ transaction printer. There are two models featuring serial and parallel interfaces. Announced June 1993. Withdrawn November 2000.

4772:  Universal Financial Printer. High quality dot-matrix printer designed for the financial services industry. Announced April 1994. Withdrawn December 1996.

4779:  Hybrid SmartCard device. As IBM succinctly notes it is an end user activated device supporting client identification for electronic processing of financial transactions. Intended for both SmartCard and magnetic stripe applications. Announced August 1996. Withdrawn December 1999.

486:  Abbreviation for the 80486, also known as the i486. 32-bit microprocessor chip family from Intel introduced in 1989 with built-in math coprocessor. Replaced the 386 and replaced by the Pentium. A low end 486SX was also introduced, forcing the renaming of the standard 486 to 486DX. Typical description of a particular chip would be 486DX/33, where the 33 indicated a 33MHz processor speed.

4860:  See PCjr.

4863:  PCjr color display. Withdrawn January 1989 but still available on the used market (eBay).

4912:  Infoprint 12. A 12 ppm printer that replaced the 4312. Withdrawn October 2001.

495x:  Processors in the Series/1 product line.

496x:  The peripherals for the Series/1 product line.

4973:  Line printer. Withdrawn October 1986.

4974:  Serial printer. Withdrawn October 1986.

4975:  Serial printer. Withdrawn October 1986.

4982:  Sensor and I/O subsystem for Series/1. Withdrawn December 1989.

4987:  Programmable communication subsystem for Series/1. Withdrawn February 1991.

4990:  Communication console. Withdrawn February 1991.

4993:  Channel transmission enclosure. Withdrawn February 1991.

4994:  ASCII device control unit. Withdrawn February 1991.

4997:  Rack enclosure for Series/1 units. Withdrawn February 1991.

4GE:  Fourth Generation Environment.

4GL:  Fourth Generation Language. Generic term for a high-level language/system – often end-user oriented – for creating application systems. Often used synonymously with application generator.

5080:  CAD/CAM/CAE graphics display system, components of which are numbered 508x. Replaced by the 6090 in October 1989.

5103:  Printer. Withdrawn March 1983.

5144:  PC convertible monochrome display. Withdrawn August 1989.

5145:  PC convertible color display. Withdrawn August 1989.

5150:  The original PC. Withdrawn March 1989.

5151:  Monochrome 3270 compatible monitor. Withdrawn June 1992.

5154:  Color 3270 compatible monitor. Withdrawn November 1989.

5155:  The portable PC. Functionally equivalent to the 5150. Withdrawn April 1986.

5159:  Programmable asynchronous I/O and communications controller for the AS/400 – vintage 1992. Attached up to four asynchronous devices, and was promoted mainly for CIM applications.

5160:  The PC/XT family. Withdrawn February 1989.

5167:  Monochrome display for the PC AT. Withdrawn May 1988.

5169:  Quietwriter printer for the PC AT. Withdrawn May 1988.

5170:  The PC/AT family. Withdrawn March 1990

5170-495:  A low-cost Series/1 computer based on the PC/AT. Used as a store controller. Defunct.

5173:  PC Network baseboard extender connecting PCs and PS/2s to the IBM Baseband network. Announced April 1987. Withdrawn March 1998.

5178:  PC Network broadband translation unit. Announced April 1987. Withdrawn February 1993.

5183:  Lexmark portable printer. Withdrawn September 1993.

5201:  The low-end Quietwriter. Non-impact printer (40 to 60 cps) for letter quality text and APA graphics. Withdrawn December 1990.

5202:  The Quietwriter. Non-impact thermal ribbon printer (up to 274 cps) for letter quality text and APA (240 x 360dpi) graphics. Withdrawn December 1992.

5204:  Quickwriter. 24-wire dot matrix printer. 188 cps (NLQ) or 396 cps draft, or 66 cps for – only IBM could invent this – executive quality letter printing. Withdrawn December 1991.

5208:  ASCII-5250 protocol converter for use with System/38 or AS/400. Enables up to seven ASCII devices to connect using twinax. Withdrawn October 1992.

5209:  3270-5250 protocol converter for use with AS/400. Allows 3270 devices to hot-key between mainframe and AS/400 applications. Withdrawn November 1994.

5210:  60 cps printwheel printer for mainframe attachment. Withdrawn February 1989.

5214:  200 cps matrix printer for the System/36. Obsolete.

5216:  Printwheel printer for PCs. Withdrawn July 1987.

5218:  Printwheel printer for 6580 Displaywriter System. Withdrawn December 1987.

5219:  24-60 cps daisy wheel printer for attachment to System/3x and AS/400. Withdrawn February 1989.

5223:  Wheelprinter for PCs. Withdrawn May 1988.

5224:  30-560 lpm matrix printer for the System/3x and AS/400. Withdrawn October 1987.

5225:  Matrix printer for System/3x and Series/1. Withdrawn October 1987.

5231:  Control unit for 5230 data collection system. Withdrawn January 1990.

5250:  Terminal family developed for IBM’s family of small business computers (e.g., System/3x). Very similar to 3270.

5251:  Display station for System/3x and AS/400. Withdrawn November 1986.

5252:  Dual display station. Withdrawn May 1982.

5253:  Display station. Withdrawn April 1990.

5256:  Printers in the 5250 family (40 to 120 cps). Withdrawn January 1988.

5259:  Migration Data Link. Stand-alone device providing twinax cable path between an AS/400 and a System/36 or System/38. Designed as a migration aid. Withdrawn November 1994.

5262:  650 lpm impact line printer for use with Series/1, System/3x, and AS/400. Replaced by 6252 in March 1991. Finally withdrawn May 1992.

5271:  See 3270 PC. Withdrawn June 1988.

5291:  Monochrome terminal for direct attachment to a System/3x controller, or via a 5251 or 5294. Withdrawn August 1986.

5292:  Color version of the 5291. Withdrawn November 1986.

5294:  Remote controller providing network attachment between 5250 devices and a System/36 or System/38. Replaced by the 5394. Withdrawn November 1988.

5299:  Telephone twisted pair adapter for the System/38. Announced October 1987. Replaced by 7299 in February 1998.

5308:  ASCII to 5250 connection. Announced September 1996. Withdrawn December 1999.

5321:  Magnetic card input/output for System/32. Withdrawn April 1990.

5363:  The last member of the System/36 family. The 5363 resolutely refused to die (or, more to the point, IBM didn’t seem to be able to persuade people to buy the small AS/400s instead). IBM re-named it AS/Entry mid 1989. The last S20 and S22 models were withdrawn October 1992.

536x:  The System/36 family. Replaced by the low-end AS/400s.

538x:  The System/38 family. Replaced by the AS/400.

5394:  Remote workstation controller for AS/400. Replaces the 5294. Announced June 1988. Replaced by the 5494 in December 1998.

5494:  Remote control unit for the AS/400; basically it’s the 5394 with Token Ring capabilities. Announced February 1992. Enhanced September 1993 with LU6.2 and Frame Relay to Token Ring Bridge feature September 1996. Withdrawn in December 1999.

5520:  Defunct IBM office administration system. Had good electronic mail facilities, word processing, etc, and at one time was a key strategic product. Its architecture was a major influence on the development of SNADS.

5525:  System unit for the 5520 office administration system. Withdrawn April 1990.

5531:  Ruggedized PC/XT. Withdrawn June 1989.

5552:  Color display for the 5531. Withdrawn May 1992.

5811/2:  Limited-distance modems. Obsolete.

5821/2:  Data Service Unit/Channel Service Unit (DSU/CSU). Up-market extensions of IBM’s modem range. The 5821 is a straightforward modem, and the 5822 is a modem which can also support some network management on digital services. Withdrawn June 1990 and February 1997, respectively.

5841:  Cheap and cheerful IBM modem: sync/async, full duplex, up to 1200bps. Withdrawn June 1989.

5842:  Modem (up to 2400 bps). Withdrawn August 1988.

5853:  IBM modem (up to 2400bps) announced February 1988. Nothing very special except that the price was fairly realistic for an IBM box. Withdrawn February 1997.

5858:  IBM stand-alone synchronous modem from June 1989. Withdrawn December 1994.

586:  Commonly-used name for the Pentium before its release and naming. Pent means five.

586x:  IBM modem family from the early 1990s.

5973:  See NIA.

601:  See PowerPC.

6030:  9370 communications processor. Originally supported TRN and Ethernet LANs only, but enhanced mid 1988 to provide support for all 9370 communication functions. Obsolete.

6040:  ThinkPad power series 820. Replaced by the 7247.

6042:  ThinkPad power series 850. Replaced by the 7249.

6050:  IBM PC power series 830. Withdrawn March 1996.

6070:  IBM PC power series 850. Withdrawn March 1996. Replaced by the 7249.

6090:  Graphics system introduced at the same time as CIM Advantage for the CAD/CAM and CIM1 markets. Supported full CAD, and had strong three-dimensional capabilities. Withdrawn January 1994.

6091:  IBM color display. Cylindrical faced tube, very high-quality, high resolution (up to 1280 x 1024 pixels). Attachable to RT, 5080 graphics systems, and non-IBM systems. 16 inch Model 016 (announced December 1991) was designed for RS/6000 and X-Station 120/130 use. Finally withdrawn September 1995.

6093:  Tablet/cursor pad for PS/2, PC, 5080 and 6090 graphics processors, and RS/6000. Announced July 1991. Withdrawn December 1999.

6095:  Graphics processor. Mainly for CAD/CAM applications. Announced October 1989. Withdrawn January 1994.

6097:  Multi-color 300dpi thermal transfer printer. Withdrawn February 1994.

6098:  9370 Channel Control Unit which functions as a high-speed controller for 5085-6 and 6096 graphics processors. Announced October 1989. Withdrawn March 1999.

6150:  See RT PC. Finally withdrawn May 1991.

6151:  See RT PC. Finally withdrawn May 1991.

6152:  Hybrid RT PC + PS/2 which consisted of 6150-style RISC chip plugged into the MicroChannel on a PS/2 Model 80, and ran a version of BSD. Sold initially only to US universities. Launched February 1988, withdrawn August 1990.

6153:  Monochrome graphic display for RT PC. Withdrawn September 1993.

6154:  Color display for RT PC. Withdrawn September 1993.

6155:  Extended monochrome graphic display for RT PC. Withdrawn September 1993.

6156:  Portable disk drive for RT PC. Withdrawn September 1993.

6157:  System/36 streaming tape drive. Can be read but not written to on the AS/400. Withdrawn June 1993.

6180:  8 color A4 size plotter. Withdrawn December 1993.

6182:  8 color A4 size auto-feed plotter. Withdrawn October 1993.

6185:  Color plotter. Withdrawn December 1993.

6186:  8 pen color plotter with automatic pen change. Withdrawn April 1990, and replaced by the 6187.

6187:  8 pen large format (A through E sizes) color plotter with automatic pen change. Withdrawn May 1992.

6192:  Expansion unit for RT PC. Withdrawn September 1993.

6250:  X Terminal family for attachment to AS/400 and Unix-based machines. All four models withdrawn December 1996.

6252:  The Impactwriter printer. Impact band printer for RS/6000, AS/400, and 3270 environments. Up to 1200 lpm. Replaced 3262 and 5262. Announced April 1991. Finally withdrawn September 1997. Replaced by the 6400.

6260:  PC 100 series. Pentium-based PC systems. Replaced by the PC 300GL in June 1997.

6262:  High-speed (1200-2200 lpm) impact line printer. Attaches to 3270 controller, directly to the mainframe’s channel, or to AS/400, when it’s configured as a 4245. Also attachable to System/88 and to LANs. Special bar-code capabilities added October 1989, and 3174, PS/2, and RS/6000 interfaces mid 1990. Withdrawn June 1999.

6271:  PC 130 series. 486-processor-based PC systems. Obsolete.

6272:  PC 300GL series. Pentium-based PC systems. Replaced by NetVista September 2000. Support ends December 2003.

6281:  PC 150 series. 486-processor-based PC systems. Obsolete.

6282:  PC 300GL series with 166-233MHz Pentium MMX processors. Replaced by NetVista September 2000.

6299:  Hub for mid-range system family. Announced February 1995. All models withdrawn September 1999. All but Model 8DB have been replaced by the 7299.

6312:  PS/ValuePoint color display. Withdrawn April 1994.

6314:  PS/ValuePoint color display. Withdrawn April 1994. Replaced by the 6324.

6317:  PS/ValuePoint color display. Withdrawn December 1994. Replaced by the 6327.

6319:  PS/ValuePoint color display. Withdrawn December 1994.

6321:  Color monitor. Finally withdrawn June 1996.

6322:  14-inch color monitor. Support ended December 1999.

6324:  14-inch color monitor for PC attachment. Withdrawn June 1996.

6325:  15-inch color monitor for PC attachment. Withdrawn June 1996.

6327:  17-inch color monitor for PC attachment. Withdrawn June 1996.

6331:  E54 15-inch color CRT PC monitor, announced January 2000.

6381:  ValuePoint 486-based PC system. Withdrawn November 1994.

6382:  ValuePoint 386/486-based PC systems. Withdrawn March 1994.

6387:  ValuePoint enhanced 486-based PC system. Withdrawn August 1994.

6400:  Line matrix printer, up to 1500 lpm. Models for all IBM computer systems. Announced October 1995. More recent models are still available.

6408:  Heavy duty, continuous feed, 800 lpm impact matrix line printer for mainframe, AS/400, and RS/6000. Introduced September 1993. Replaced by 6400 April 1996.

6412:  Heavy duty, continuous feed, 1,200 lpm impact, matrix, line printer. Introduced March 1994. Replaced by 6400 April 1996.

6472:  ValuePoint Performance Series PCs. Withdrawn August 1995.

6482:  ValuePoint Performance Series PCs. Withdrawn July 1995.

6484:  ValuePoint Performance Series PCs. Withdrawn September 1995.

6492:  ValuePoint Performance Series PCs. Withdrawn August 1995.

6494:  ValuePoint Performance Series PCs. Withdrawn August 1995.

64 bit:  See 64-bit Architecture.

64-bit:  See 64-bit Architecture.

64-bit Architecture:  The ability, new to the zSeries 900, to address up to 18 exabytes of data, by using addresses that are 64 bits long, rather than the 31 bit and 24 bit addressing of previous S/3x0 mainframes. AIX1 also supports the 64-bit architecture of the pSeries.

6527:  Color display. Withdrawn March 1997.

6540:  G42 color monitor. Announced April 1997. Withdrawn May 2000.

6541:  G51 color monitor. Announced July 1997. Withdrawn April 1999, then later replaced by the 6331.

6542:  Color monitor. Withdrawn August 1997.

6543:  Color monitor. Withdrawn September 1997.

6544:  G70 and G70t 17-inch color CRT PC monitors. Announced August 1995. Withdrawn January 1998, with some models replaced by the 6547.

6545:  20-inch color monitor. Announced May 1997. Withdrawn May 1997.

6547:  G72 and G74 17-inch color CRT monitors. Announced April 1997. Replaced by 6548 May 2000.

6548:  G76 17-inch color CRT monitor. Announced September 1999 and replaced by the 6627 November 2000.

6550:  P76 17-inch flat-screen CRT monitor, announced September 1999.

6551:  P96 19-inch color CRT monitor built with Sony Trinitron technology. Announced January 2000.

6552:  P260 21-inch color flat screen CRT monitor built with Sony Trinitron technology. Announced September 1999.

6553:  15-inch color monitor. Withdrawn August 1997.

6554:  P70 17-inch color CRT monitor built with Sony Trinitron technology. Announced February 1995. Replaced by 6556 August 1998.

6555:  P200 and P201 20-inch color CRT monitor built with Sony Trinitron technology. Announced June 1995. Replaced by 6557 and 6558 in August 1998.

6556:  P72 17-inch color CRT monitor. Announced April 1998 and replaced by the 6550 December 1999.

6557:  P92 19-inch color CRT monitor. Announced April 1998 and replaced by the 6551 May 2000.

6558:  P202 21-inch color CRT monitor built with Sony Trinitron technology. Announced April 1998 and replaced by the 6552 December 1999.

6560:  PC 300 and 340 Series Pentium-based systems. Withdrawn June 1997 with some models replaced by the 6282 PC 300GL.

6562:  PC 300PL Series Pentium-based system with MMX technology. Announced August 1997. Withdrawn June 1998.

6571:  PC 330 Series 486-based system. Finally withdrawn September 1996.

6580:  The Displaywriter. Obsolete.

6611:  Network Processor announced January 1992 which acts as a multiprotocol bridge-router for consolidating different types of network traffic on single links. Supports Ethernet and TRN LANs, Frame Relay, TCP/IP, SNA, and NetBIOS. March 1993 a low end model running under OS/2 was announced, and early 1994 improved performance and support for APPN, AppleTalk, and VINES were introduced. See also Router, MNPP, MPNP. Withdrawn March 1998. Replaced by the 2210 and 2216.

6627:  G78 17-inch color flat-screen CRT monitor. Announced August 2000.

6640:  Defunct ink-jet printer.

6670:  Long-dead multi-font laser printer for WP and DP. Was also usable as a communications terminal and convenience copier.

6715:  The Actionwriter. A low-cost PC daisywheel printer. Long obsolete.

68000:  32-bit microprocessor chip made by Motorola. The only real contender for non-IBM PCs (it’s used in the Apple Macintosh and various specialized workstations, and was incorporated in the defunct PC/370 where it emulated the mainframe’s instruction set). IBM flirted with the 68000 briefly in the System/9000 workstation which was launched in mid 1984 and sank without a trace soon thereafter. IBM also used the 68000 in autonomous I/O processors in the AS/400, and in the Data Interpretation System (see DIS2). The PowerPC pretty much spelled the end of the 68000.

6900:  Short lived family of PS/2s turned into typewriters: the 6907 and 6908. See Personal Typing System.

6907:  Personal Typing System/2.

6908:  Personal Typing System/2-286.

7000:  IBM computer series which pre-dated the 360. Died out in the 1960s.

7051:  The POWER Network Dataserver – a network file server announced February 1993 and withdrawn October 1994. Supported the NFS standard. Based on the Auspex multiprocessing engines, and was sold both as an IBM product and on the OEM market.

7091:  See Sight and Sound.

70xx:  Members of the RS/6000 family.

7131:  MultiStorage Tower. Stand-alone storage tower provides expansion with hard disk drives, tape or CD-ROM, depending on model. Part of the StorageSmart family. Sold configured with two Starfire, Scorfire, Scorpion disk drives.

7133:  SSA Disk Subsystem. Array disk storage subsystem, the first one using the serial storage architecture, announced July 1995 for attachment to RS/6000. Used in the Seascape-based Versatile Storage Server. See also Starfire, Scorfire, Scorpion.

7134:  3.5 inch high-capacity SCSI DASD for the RS/6000. Replaced by the 7027 December 1996.

7135:  The RAIDiant disk array announced July 1993. Attachable to the RS/6000 and positioned for high availability, high reliability server applications – e.g., OLTP. Includes automatic data reconstruction after a single disk failure, hot-pluggable drive modules, redundant power supplies, disk striping, built-in cache, and SCSI interfaces. Available in RAID 0, 1, 3, and 5 configurations. Replaced by 7133 September 1998.

7137:  RAID subsystem for the RS/6000. Operates in RAID 0 or RAID 5 modes. Announced October 1994. Attachment to Sun and HP boxes announced February 1995, to AT&T Model 3455 Class 3435 January 1996, then AS/400 in June 1996.

7171:  Cheap and cheerful IBM protocol converter enabling the use of up to 64 async terminals with IBM equipment. Being an IBM device, it’s not officially known as a protocol converter, it’s an ASCII Device Attachment Control Unit (DACU). Withdrawn September 1993.

7204:  Disk drive for the RS/6000. Announced September 1992 with only the very latest models still available.

7206:  4mm tape drive for the RS/6000. SCSI-attached with data compression option. Attachment to Sun, DEC, and HP boxes announced February 1995. The most recent models are still available.

7207:  1/4 inch cartridge (QIC) tape drive for the RS/6000. Announced February 1990. It began at 150MB capacity per cartridge, rose to 13GB (double if compressed), but the latest and only available model now stores 4GB.

7208:  External 8mm streaming tape cartridge drive for the AS/400 and RS/6000. Announced February 1990 with a capacity of 2.3GB, but the latest model does 60GB. Uses helical scan (i.e., VCR-type) technology, and a variant of IDRC. Fault-tolerant mirroring, improved performance, and unattended operation announced July 1994.

7209:  Optical disk drive for the RS/6000 announced January 1993. Read/write and SCSI-compatible. Cartridges are interchangeable with the 3995. Withdrawn February 1999.

7235:  RISC System/6000 7235 POWERgraphics GTO supergraphics processor subsystem. Graphics subsystem attached to RS/6000 POWERstations. Announced July 1991. Replaced by 7250 November 1994.

7236:  See MediaStreamer.

7245:  POWER Visualization System, later renamed Power Visualization Server.

7247:  ThinkPad Power Series 820. Announced February 1996 but replaced by 7249 in January 1997.

7249:  ThinkPad Power Series 850. Announced February 1996. Withdrawn January 1998.

7250:  POWER GXT1000 Graphics Accelerator. For RS/6000 workstations. Announced May 1994, withdrawn July 1998.

7299:  Express Hub and Multiplexer for 5250. Announced June 1997. Withdrawn November 2000.

7318:  Network servers (announced July 1994) for attaching async devices and parallel printers via Ethernet. Withdrawn December 1998.

7331:  8mm tape library for RS/6000, HP, and SunSPARC systems. Includes IDRC data compression. Replaced by 7334 September 2000.

7332:  4mm DAT tape autoloader for the RS/6000. Attachment to Sun and HP boxes announced October 1994, with newer models increasing capacity.

7334:  8mm tape library with one to four Mammoth-2 tape drives and 30 cartridge slots. Total capacity: 4.5TB. Announced September 2000.

7336:  4mm automated tape library announced April 1996 as part of the StorageSmart family for the RS/6000. Withdrawn June 1998.

7426:  ASCII-to-SDLC1 protocol converter capable of supporting up to four devices. Withdrawn December 1997.

7427:  Console switching unit for the 3745 enabling up to four units to be controlled by a single operator console. Withdrawn December 1997.

7437:  VM technical workstation announced in the US November 1988 as an RPQ. Floor standing add-on processor which connected to a PS/2 via an interface card to provide a full VM/SP environment. Quite a powerful beast – it was rated at about 0.7 of a MIPS. Little was heard about it apart from the original announcement.

7501:  The Power Network Dataserver – a network file server launched February 1993. Supported the NFS standard. Based on the Auspex multiprocessing engines, and was sold both as an IBM product and on the OEM market. Withdrawn October 1994, with the RS/6000 900 and R series as possible replacements.

752x:  Family of shop floor data collection terminals. Enable data to be collected from bar code readers, magnetic strip readers, keyboards, and light pens. Some models use radio telemetry over areas of up to 250,000 square feet, and are powerful enough to cover an 18-hole golf course (is nothing sacred?). Withdrawn December 1997.

7541:  Ruggedized bench-top PS/2 originally using the 80286 processor. Proof against extremes of temperature, vibration, power surges, and all sorts of perils, excluding being beaten on price/performance by clones. Withdrawn May 1992.

7542:  Ruggedized rack-mounted PS/2 using the 80286 processor. Withdrawn May 1992.

7544:  Ruggedized medium resolution color display for factory floor environments. Withdrawn December 1995.

7546:  Ruggedized 80386 MicroChannel PS/2. Finally withdrawn June 1996.

7552:  Ruggedized PC/AT with MAP interface. Withdrawn May 1992.

7554:  Ruggedized medium/high resolution 19 inch color display for PS/2 and PC. Touchscreen capability announced October 1991. Withdrawn December 1994.

7561:  Ruggedized bench-top PS/2 using the 80386 processor. Withdrawn August 1993.

7562:  Ruggedized rack-mounted PS/2 using the 80386 processor. Withdrawn August 1993.

7568:  80486 industrial computer (vintage January 1992). Obsolete.

7574:  Ruggedized industrial graphics display. Announced March 1994.

7585:  Family of industrial computers. Announced July 1994. The most recent model was withdrawn December 1999.

7590:  Industrial 486-based computer. Announced July 1994. Withdrawn January 1998.

7592:  Packaged flat panel touch screen and AT-compatible computer that can be used as a kiosk core module, embedded controller or detachable point-of-sale module. Available March 1996. Withdrawn December 1998.

7593:  Ruggardized Industrial Computer (IC). Intel-based PC announced September 1996. Withdrawn June 1998.

7596:  Cross-Platform Server. Supports Digital VAX/VMS, AIX, Windows and OS/2 applications. Announced August 1995 and withdrawn December 1996.

7652:  Rolm PhoneMail.

7684-6:  The TouchMobile data collection products. Withdrawn June 1995.

7690:  Clinical workstation based on PS/2 model 30, announced March 1990. Joint project with Baxter Healthcare group. Withdrawn November 1992.

7820:  ISDN terminal adapter. Used for attaching synchronous equipment to ISDN. Interfaces to NetView. Announced September 1988 and withdrawn August 1993.

7855:  19,200bps V.32 modem launched June 1990. Withdrawn February 1997.

786x:  Large family of modems announced September 1988. All models withdrawn by December 1997.

8008:  Intel’s replacement for its first processor, the 4004. Twice as fast and available just a year later, in 1972. It powered the Mark-8, one of the earliest home computers. Replaced by the 8080 in 1974.

801:  IBM project which produced the RISC chip. The legend has it that the name 801 was chosen because it was the number of the building in which the development work took place.

802.1/2:  International (IEEE) standard for the higher level LAN protocols. 802.1/2 protocols apply to all 802 implementations.

802.3:  International (IEEE) standard for the physical characteristics and medium of CSMA/CD LANs; includes specification of data transmission and access control. Note that it is a common misconception that Ethernet is an 802.3 LAN; Ethernet is a CSMA/CD LAN which is close to, but not fully compatible with, 802.3.

802.3z:  The Gigabit version of 802.3.

802.4:  International (IEEE) standard for the physical characteristics and media of token passing LANs. 802.4 is for bus LANs and is used by MAP1 LANs.

802.5:  International (IEEE) standards for the physical characteristics and media of token passing LANs. 802.5 is for ring LANs such as IBM’s TRN.

80286:  More commonly known as the 286.

80287:  Mathematical co-processor chip for the 80286 processor.

8035:  Cable modem for connection to 10BaseT Ethernet. Withdrawn May 1997.

80386:  Better known as the 386.

80386SX:  Better known as the 386SX.

80387:  Mathematical co-processor chip for the 80386 processor.

80388:  Similar chip to the 80386, but with a narrower data path, making it much cheaper to use in systems.

80486:  Better known as the 486.

80586:  Pre-release name for the Pentium.

8080:  Intel’s third microprocessor, introduced in 1974 as a replacement for the 8008. It powered the Altair, the first popular personal computer. The 8080 was replaced by the 8086 and 8088 beginning in 1978.

8086:  Early 16-bit microprocessor chip design from Intel. IBM abandoned all its 8086 PS/2s in October 1990. Replaced by the 286 in 1982.

8087:  Mathematical co-processor chip for the 8086 processor.

8088:  Early 16-bit microprocessor chip design from Intel, used in the original PC and PC/XT. Replaced by the 286 in 1982.

8100:  At one time IBM’s principal distributed processing engine, providing local processing capability under two incompatible operating systems – DPPX and DPCX. Never a brilliant success, and moribund since host-based networks went out of fashion. Implementation of DPPX on the mainframe (9370) as DPPX/370 was announced March 1988.

8102:  Storage input/output unit for attachment to the 8100 Information System. Withdrawn June 1989.

8130:  Processor for the 8100 Information system. Withdrawn June 1986.

8150:  Enhanced processor for the 8100 Information system. Withdrawn June 1986.

8209:  LAN bridge for interconnecting TRNs with 802.3/Ethernet LANs, and/or with other TRNs. Withdrawn June 1994. Replaced by the 8229.

8210:  IBM Nways MSS server. Announced September 1996. Withdrawn September 2000. See Multiprotocol Switched Services.

8219:  Fiber optic repeater, allowing physical distance between TRN nodes to be extended to up to 2km. The repeaters are used in pairs to convert from copper to optical fiber and back. Withdrawn February 1993.

8220:  Optical Fiber Converter. Electrical-to-optical and optical-to-electrical converters and signal repeaters for TRN. Withdrawn February 1993.

8222:  Ethernet and 10-Base-T hub. Announced February 1995. Replaced by 8242 August 1998.

8223:  Fast Ethernet Workgroup Hub. An 8 port IEEE 802.3u 100BaseTX unmanaged workgroup hub. Announced April 1996. Replaced by 8245 in August 1998.

8224:  Modular, stackable workgroup hub solution for Ethernet, announced February 1994. Can be placed in a stack of up to ten hub modules, with only one management unit required to manage all units. Supportable remotely or locally using SNMP. Replaced by 8237 March 1998.

8225:  Fast Ethernet stackable hub. Three models were announced May 1996. Replaced by 8245 August 1998.

8226:  Token Ring RJ45 connection. A multi-station access unit (MAU) announced October 1994. Withdrawn January 2002.

8228:  Multi-station Access Unit (MAU) that can attach up to eight devices. Withdrawn January 2002.

8229:  Rack-mounted hardware bridge announced March 1994. Connects TRNs and Ethernets. Replaced the 8209. Withdrawn July 1998.

8230:  Controlled Access Unit. Originally an intelligent access concentrator, announced September 1990, for attaching devices to TRNs – in effect it’s a less dumb version of the 8228 MAU. Mid 1995, it became the Nways 8230 hub. Withdrawn January 2002.

8232:  LAN channel gateway. RPQ supporting connectivity between TRN and/or PC Network and/or Ethernet, and IBM mainframe channel. Uses TCP/IP protocols. Replaced by the 3172 December 1991, but still supported, most notably by z/VM.

8235:  Multiport, multiprotocol, remote access server supporting remote dial-in/out to LANs from PCs. Announced September 1994. Gained ISDN support early 1996. Withdrawn July 1998.

8237:  Stackable Ethernet hub used as a 10BaseT repeater. Announced May 1996. Withdrawn March 2000.

8238:  Nways Token Ring stackable hub with manageable base and expansion units, announced June 1995. Replaced by 8239 July 1998.

8239:  Token Ring stackable hub. Up to eight can be linked together and managed, via SNMP, RMON or RMON2, as one stack, connecting up to 256 devices. Announced May 1998.

8240:  FDDI Concentrator (announced June 1992) supporting both FDDI fiber and shielded twisted pair. Replaced by 8244 in December 1994.

8242:  10BaseT Ethernet hub available in 8 and 16 port models. Announced June 1998 and withdrawn June 2000.

8244:  FDDI workgroup concentrator announced May 1994 for attaching devices to 100Mbps LANs via a fiber link, UTP copper cable, or copper twisted pair. Withdrawn April 1998.

8245:  10BaseT and 100BaseTx Ethernet dual backplane stackable hub, announced June 1998 and withdrawn September 2000.

8250:  Multiprotocol (TRN, Ethernet, FDDI) intelligent hub for connecting different types of computer network into larger enterprise networks. Jointly developed by IBM and Chipcom, and announced September 1992. 3174 functionality announced January 1994. February 1994, it acquired enhanced Ethernet security, additional connectivity for FDDI, further management function, and concurrent access to TCP/IP, VAX, and 3270 applications. It gained APPN and Frame Relay support in July 1994. Ethernet 24-port 10BASE-T and RMON support in the Token Ring Management Modules (TRMM) was announced February 1996. See also IHMP, LTLW. Replaced by 8260 in June 1998.

8260:  Intelligent switching hub announced February 1994. Capable of acting as a wiring-closet concentrator for medium- to large-sized LANs, and can also act as a central concentrator in a collapsed backbone configuration. Has a range of management functions, a new load-sharing power system for improved reliability, and support for more LAN segments on the backplane. The 8260 provides the basis for IBM’s new ATM2 hub – an ATM module was announced in June 1994 based on the Prizma chip, along with APPN and Frame Relay support. Ethernet 24-port 10BASE-T and RMON support in the Token Ring Management Modules (TRMM) was announced February 1996 along with an ATM 12-port 25Mbps Concentration Module. The successor to the 8250. Withdrawn December 1999. See also Nways.

8265:  Nways ATM switch. Announced September 1997. Withdrawn October 2000.

8270:  Nways Token Ring LAN switch. Announced October 1996.

8271:  EtherStreamer Switch. IBM’s first stand-alone LAN switch was announced March 1994. ATM-capable models were introduced in June 1996. By March 2000, all models had been withdrawn, although one model was replaced by the 8275.

8272:  Nways Token Ring LAN switch. Announced March 1995 and replaced by 8270 December 1998.

8273:  Nways Ethernet route switch. Supports ATM, LAN emulation, trunking services, internal routing, and any-to-any switching. Announced September 1996. Replaced by the 8271 May 1998.

8274:  Nways LAN RouteSwitch. Announced September 1996. Withdrawn March 2000.

8275:  Ethernet workgroup switches first announced June 1998 and all withdrawn by September 2000.

8276:  Nways Ethernet RoutePort. Announced March 1997 and withdrawn May 1998.

8281:  ATM2-LAN bridge which links LANs with an ATM network. Supports Ethernet, TRN, LAN-to-LAN connection over ATM, and local bridging between LANs. Withdrawn August 1997.

8282:  Turboways ATM workgroup concentrator. Replaced by 8285 in December 1996.

8285:  Nways ATM workgroup switch with 12 25.6Mbps ATM ports. Based on the same technology as the 8260. Announced February 1996. Withdrawn September 2000.

8300:  Video access node (VaN). Allows for real-time, interactive delivery of broadcast-quality video over ATM LAN or WAN networks. Announced October 1996 and withdrawn March 1998.

8361:  Network Station. Some models were known as Series 300. Network Computer-type device which is platform independent with open access to information using industry-standard interfaces and protocols. Announced October 1996. Replaced by the 8363 September 2000 except the twinax Model 341 which was withdrawn December 1999.

8362:  Network Station Series 1000. Network Computer announced November 1997. Replaced by the 8364 September 2000.

8363:  NetVista N2200 Thin Client family (previously Series 2200). Network Computer-type device announced September 1999.

8364:  NetVista Thin Client. Models variously labeled Series 2800, N2800 and N2800e. Network Computer-type device announced May 1999.

8503:  PS/2 monochrome display. Withdrawn September 1991.

8504:  PS/2 monochrome display. Withdrawn December 1995.

8506:  High resolution 8.5 inch x 10.5 inch portrait monitor for PS/2; capable of displaying full A4 documents. Announced March 1989, withdrawn March 1994.

8508:  High resolution, 14 inch x 11.8 inch, monochrome, landscape workstation monitor capable of displaying text and image documents side by side. Announced March 1989, withdrawn June 1993.

8511:  PS/2 color display. Withdrawn June 1993.

8512:  PS/2 color display. Withdrawn January 1993.

8513:  PS/2 color display. Withdrawn April 1992.

8514:  High resolution IBM monitor for PS/2 systems. Resolution of 1024 x 768 in 16 colors in interlaced mode. Announced April 1987. Withdrawn July 1993.

8514/A:  Video standard 1024 x 768 pixel resolution. Never widely accepted because it was tied to MCA.

8515:  PS/2 color display. 14 inch screen, 1024 x 768 pixels. Withdrawn July 1993.

8516:  14 inch color touch-screen monitor for the PS/2. Introduced August 1991. Plugs into the PS/2 mouse port. Withdrawn July 1993.

8517:  PS/2 color display. Withdrawn June 1993.

8518:  14 inch color screen for the PS/2, announced October 1991. Withdrawn August 1993.

8525:  PS/2 model 25. A PS/2 with 386 microprocessor developed exclusively for classroom use. Three models were announced January 1992 and withdrawn December 1993.

8530:  PS/2 model 30. Announced April 1987 and finally withdrawn May 1992.

8543:  PS/2 model 40. Withdrawn July 1992.

8550:  PS/2 model 50. Withdrawn July 1991.

8573:  Portable PS/2 model 70. Obsolete 80386-based draggable computer announced May 1989 and upgraded March 1990. Had fair(ish) market success in its niche. Withdrawn March 1993.

85xx:  See PS/2.

8600:  PS/2 server. A 486 network server announced June 1992 and withdrawn March 1995.

8602:  The IBM WorkPad. A telecommunications industry mobile solution, no less. The first models were announced September 1997, weighing six ounces and featuring a personal organizer with connectivity to PC, ThinkPad, and the Internet. Subsequent models are down as low as four ounces. Weighing ten times as much, the WorkPad z50 (2608) was replaced in February 2000 by the only slightly heavier (46 ounce) ThinkPad 240 (2609). Other models, however, continue to be upgraded with new WorkPad models that all claim to be market leader Palm-compatible. See also PDA, 2609.

8604:  Monochrome display. Withdrawn April 1990.

8638:  PC Server 315. Announced May 1997.

8639:  PC Server 310 and 325. Announced October 1995 with a few newer models still available.

8640:  PC Server 300, 320 and 330. By December 1998, the last model was withdrawn.

8641:  PC Server 500 and 520. By February 1997, the last model was withdrawn.

8642:  PC Server 720. The first models were announced March 1995 and the last models withdrawn April 1997. All maintenance ended March 2001. A couple of models were replaced by the 8650.

8650:  PC Server 704. 4-Way SMP Pentium Pro-based server, announced March 1996 and replaced by the 8651 in March 1998.

8651:  Netfinity 7000 PC server. Announced September 1997 and withdrawn December 1998.

8690:  Ultimedia touch activity center. A family of multimedia kiosks based around the PS/2 and touch display technology. Announced March 1992, withdrawn August 1993.

8750:  Defunct IBM digital PABX supporting 96 to 20,000 lines. Based on Rolmbus 295. Announced autumn 1987 but was plagued by slippages. Following the Siemens acquisition of Rolm, the 8750 (and the 9750 US version) disappeared from the scene.

8751:  Computerized branch exchange. Withdrawn December 1988.

8755:  Operator console. Withdrawn December 1988.

8758:  Data connection module rack. Withdrawn December 1988.

8775:  Defunct terminal for use with 8100 and mainframe processors.

8809:  Obsolete start-stop and streaming reel-to-reel tape drive, for 8100s, System/36s, and small mainframes.

8815:  Scanmaster Image System. Defunct image transfer and printing machine. Classified along with the OS/6, 3730, 3790, and other things that IBM would prefer to forget.

8880:  Series III copier/duplicator model 70. Withdrawn July 1988.

8885:  Series III copier/duplicator model 85. Withdrawn July 1988.

8S:  CMOS 8S bulk technology.

9021:  The big, water-cooled ES/9000 models first announced September 1990. September 1991 announcements included 4 new models, faster (up to 17MBps) ESCON channels. Some of the 9021s (520, 640, 660, 740, 820, 860, 900) used new technology, and the rest were just re-named 3090s. The new technology included a second-level high-speed buffer, improved interprocess communication, ICRF, and, following the September 1991 announcements, use of fault tolerant dynamic memory arrays, concurrent channel maintenance, and new scalar and vector instructions. February 1993 announcements included faster circuitry, higher-density packaging, and 25-30% performance improvements. April 1994, a ten-way was announced. The 9021s were withdrawn between May and December 1998 in favor of CMOS machines.

9022:  An ES/9000 controller that monitors power levels and coolant flow and assists in error recovery. The first model, announced September 1990, contained two optical disk drives for maintenance and data interchange; the second model, announced January 1994, contained two 8mm cartridge tape drives.

9023:  ES/9000 I/O power sequencing unit. Announced September 1990.

9027:  ES/9000 power and coolant distributor. Announced September 1990.

9032:  Announced September 1990. The most recent model is still available. See ESCON Director.

9033:  Announced September 1990. Withdrawn April 1999. See ESCON Director.

9034:  Announced September 1990. Withdrawn July 1999. See ESCON Converter.

9035:  Announced September 1990. Withdrawn August 1998. See ESCON Converter.

9036:  Remote channel extender, introduced February 1993. Enables ESCON devices to transmit across a common-carrier (PTT) network, so that you can have your DASD or printers up to 60km away from your CPU. Withdrawn August 1998.

9037:  Sysplex timer. A unit for synchronizing the Time-of-Day (TOD) clocks of all attached processor complexes to ensure a consistent time stamp. Announced September 1990.

9038:  ESConnection Monitor System (ESCMS). System designed to permit unattended operation of data processing centers from remote locations. Withdrawn February 1992.

9039:  ESConnection Monitor System (ESCMS). Withdrawn February 1992.

9052:  Flat-screen color LCD monitor, designed for limited space applications and marketed mainly to the Financial industry. Announced March 1997. Withdrawn March 2001.

9068:  Multi-purpose passbook printer. 24-wire desktop printer for the financial services industry. Announced October 1996 with 4722 data stream support, and 4748 support added August 2000.

9075:  See PCradio. Withdrawn August 1993.

9076:  RS/6000 SP. The high-end RS/6000 unit. Originally announced February 1993 but new models keep being added.

9077:  RS/6000 SP switch router. Announced October 1997 with four media cards slots, followed in June 1998 with a 16 media card model.

9121:  The frame-mounted, air-cooled ES/9000 models derived originally from the 43xx. Supports PR/SM (which comes as standard), ESCON channels, and optional vector processing. As against the 4381, the 9121 had comparable environmentals but vastly better growth, some more features (e.g., hardware support for DB2 sort and VM/ESA), and was a good option both for 4381 users and for people replacing 308xs. September 1991, IBM announced multiprocessor models and various features previously available only on the water-cooled models (e.g., new scalar and vector instructions, and the Processor Availability Facility). February 1993 announcements included Asynchronous pageout, EMIF, improved storage configurability, more data channels, and data compression. Withdrawn August 1998 in favor of CMOS machines. See also 4391.

9221:  The rack-mounted, air-cooled ES/9000 models derived from the 9370. Not very exciting when they were first launched, but got a bit more interesting in February 1992 with the first multiprocessor version. Enhanced September 1992 with ESCON CTC, and subsystem storage protection. New models announced in April 1994 had hardware assisted data compression, Logical String Assist, integrated I/O controllers, parallel and ESCON channels, and asynchronous pageout. Withdrawn December 1998 in favor of CMOS machines.

9246/7:  Optical storage units. The 9247 is a WORM drive using 12 inch optical disk. The 9246 is a jukebox – 64 bins, 2-4 drives, 128Gb on-line. Used in the ImagePlus system, in which the 9246/7 can be channel-attached to a mainframe running MVS/ESA, or TRN-attached to an AS/Entry. Obsoleted by the 3995.

9270/4:  Voice Response Unit. Sits between a mainframe or System/3x and a touch-tone telephone, converts key depressions on the remote telephone’s key pad into 3270/5520 messages, and sends a voice message back. Developed and marketed on an OEM basis from Syntellect. Nothing terribly clever or innovative but quite a useful gadget for consumer-oriented applications. The 9270/4 was withdrawn September 1993 and replaced by IBM’s own DirectTalk products.

929x:  CallPath speech processing devices which provide high-level speech compression and telephone digital signaling functions. The 9291 is a single voice server, and the 9295 is a multiple voice server. Both were withdrawn June 1999.

9306:  Netfinity and PC server rack enclosure. Announced January 1996.

9309:  Rack enclosure for the AS/400 and 9370. Announced June 1986 and still available.

9331:  Floppy drive systems for the AS/400. Available in 8 inch and 5.25 inch versions. Media compatible with the System/3x. Announced June 1988. Finally withdrawn September 1998.

9332:  DASD subsystem for use with System/38, 9370, and larger AS/400s. Withdrawn May 1993.

9333:  Disk subsystem for the RS/6000, announced July 1991. Increased performance and capacity models announced July 1993. Withdrawn March 1996.

9334:  SCSI disk drives for the RS/6000. Withdrawn January 1996.

9335:  Disk subsystem for use with System/38, 9370, and larger AS/400s. Model A is the controller and model B is the 850Mb disk drive (up to 4 per controller). Not one of IBM’s best products – there were rumors that up to 2,000 were recalled during 1990 because of failures. Withdrawn June 1992.

9336:  Disk drive announced Aug 1990 for the AS/400 and in September 1990 for the low-end ES/9000s. Uses a standard 19 inch rack mount, and was based on the RS/6000 DASD introduced in February 1990. Early manufacturing problems led to delivery delays, but by July 1991 the problems appeared to have been solved. February 1994 advanced technology disk drives (3.5 inch rather than 5.25 inch) were introduced. Replaced by the 2105 in December 1998.

9337:  DASD for the AS/400 and RS/6000 announced September 1992. Based on arrays of 3.5 inch drives; includes a high-resilience RAID level 5 version with redundant power and disk modules. October 1994 new models were introduced with hot spare drive. Replaced by the 2105 in September 1998.

9340:  DASD announced September 1991. Rack-mounted, for channel attachment to 370/390 machines. Uncached (although it’s buffered to minimize the effect of RPS miss), and supported by all the mainframe operating systems. There are some special availability features in the 9340, including a redundant cooling system and the ability to replace the individual HDAs non-disruptively. Cached models were announced in May 1992. Seen by IBM mainly as a way of allowing users to run MVS on 9121 type machines (it’s a CKD device). Good performance and environmentals, but expensive. Obsoleted by RAMAC2. Withdrawn December 1996.

9341:  Storage controller module. Part of the 9340 subfamily of products. Announced September 1991, withdrawn December 1996.

9343:  Storage controller. Part of the 9340 subfamily of products. Announced September 1991, withdrawn December 1996.

9345:  DASD for ES/9000 units. Announced May 1992, withdrawn December 1996.

9346:  Quarter-inch tape cartridge drive for AS/400. 90Kb/sec streaming drive for backup, migration, data/program transfer, etc. Withdrawn March 1994.

9347:  Half-inch, reel-to-reel, autoloading magnetic tape drive for 9370 and AS/400. Attached via magnetic storage device controller. Withdrawn July 1992.

9348:  Front loading, rack-mounted, 1600/6250bpi, half-inch, streaming tape drive for the AS/400, 9370, and low-end ES/9000s. Instantaneous data rates of 200 and 781Kbytes/sec. Announced October 1989.

9370:  IBM mainframe announced October 1986. 370 compatible, rack-mounted, air-cooled machine which replaced the 4361. During an extremely undistinguished career (Gartner Group reckoned that only 7,000-7,500 9370s had been installed by the start of 1990), the 9370 supported 6 (yes SIX) operating systems (VM, VSE, DPPX, AIX, PICK, and MUMPS). Killed off (with the exception of the 9371) in September 1990 by the announcement of the ES/9000 line.

9371:  9370 processor announced in January 1990 which used the MicroChannel rather than the mainframe channel architecture. Ran VM/SP, VM/IS, VSE/SP, DPPX/370, and AIX. Never really fired the market’s imagination and by mid 1994 IBM had stopped talking about it. Withdrawn August 1995.

9378/9:  Transmission Resource Managers sold by IBM and designed and manufactured by Network Equipment Technologies.

937x:  Models in the 9370 family.

9390:  RAMAC 3 array storage control. RAID 5 architecture and CMOS IV storage control. Announced September 1996. Replaced by 2105 August 2000. See RAMAC2.

9391:  The RAMAC DASD array. Announced June 1994. Replaced by 2105 August 2000. See RAMAC2.

9392:  The drawer within a RAMAC DASD system. Announced June 1994. Replaced by 2105 August 2000. See RAMAC2.

9393:  RAMAC Virtual Array Storage. Announced July 1996. Replaced by 2105 March 2001. See RAMAC2.

9394:  The controller within the RAMAC DASD subsystem. Announced June 1994. Replaced by 9390 and 9391 July 1998. See RAMAC2.

9395:  The DASD array within the RAMAC DASD subsystem. Announced June 1994. Replaced by the 9392 July 1998. See RAMAC2.

9396:  RAMAC Scalable Array 3 Storage. Enhanced performance and availability for RAID 5 disk array storage subsystem. Announced September 1996. Replaced by 2105 October 1999. See RAMAC2.

9397:  RAMAC Electronic Array Storage, external storage subsystem. Announced September 1996. Withdrawn November 1999. See RAMAC2.

940x:  Various models in the AS/400 family. 9402s are small, 9404s are medium, and 9406s are big. Replaced by the iSeries 400.

940X-TSP:  The AS/400 Total System Package for ordering and installing the AS/400. Frequently ordered components are consolidated into a single shipment. Customers receive the system unit, I/O, licensed programs, and supplies in one package. Announced June 1998.

9427:  Tape cartridge library for the AS/400. Announced October 1994, withdrawn June 1998.

9500:  At one time a much rumored product which would combine the functionality of rack-mounted ES/9000 and AS/400 in the same box, and ultimately become IBM’s sole mid-range hardware (the 9500 scenario implies that firmware will enable the box to function as both an ES/9000 and an AS/400, or as either). Technically, it was quite a realistic expectation – the current AS/400 and ES/9000 hardware do not differ very much anyway. From a marketing point of view, the 9500 is something else altogether. See Fort Knox.

9504:  21-inch monochrome monitor. Withdrawn April 1996.

9507:  Flat panel color display. Withdrawn June 1996.

9515:  Color display. Withdrawn April 1994.

9516:  TFT LCD flat panel color monitor. Announced March 1997. Replaced by the 9519 January 1999.

9517:  High resolution 17-inch color display. Replaced by the 9527 in September 1994.

9518:  Color display. Replaced by the 6324 and 9524 in April 1994.

9519:  T85A/D 18.1 inch color TFT LCD digital monitors first announced December 1998 and withdrawn March 2001.

951x:  Family of color display monitors for the PS/2 and newer workstations.

9521:  21-inch color and touch screen color monitor. Withdrawn January 1996.

9524:  14-inch color and touch screen color monitor. Withdrawn June 1996.

9525:  15-inch color and touch screen color monitor. Withdrawn December 1995.

9527:  17-inch color and touch screen color monitor. Withdrawn January 1996.

9529:  MM-1 multimedia audio option. A series of sound options designed to upgrade the PC workstation to a multimedia workstation. Announced July 1993, withdrawn February 1995.

9570:  RAID DASD using disk array technology. Announced as a product in September 1991 (it had been available as a PRPQ as part of SCSE since November 1990). Uses the HIPPI interface (it can be attached to any machine provided with a HIPPI channel) and file striping for very high-speed transfer (up to 50MBps) of serial data. Strictly for scientific data to be accessed by FORTRAN programs. Withdrawn August 1995.

9590:  Rumored (in late 1993) mainframe RAID system, which eventually emerged as the RAMAC2. Rumors ended when it was discovered that there already was a 9590: the PS/2 Model 90, withdrawn July 1994.

9672:  The family of parallel CMOS mainframes known as System/390 Parallel Enterprise Server, though it was first announced April 1994 as the Parallel Transaction Server. The final series, known as Generation 6, was announced May 1999 and has since been replaced by the eserver zSeries 900.

9673:  See Parallel Query Server.

9674:  High performance sysplex server (aka Coupling Facility) announced April 1994. Uses CFCC software to provide a stand-alone server using fiber optic cables to join together up to 32 machines in a sysplex. Replaced by the 2064-100 eserver zSeries 900 Coupling Facility.

972x:  Rolm Redwood digital PABX. Obsolete.

973x:  The IDNX family of high-speed bandwidth managers for voice, data, image, and video. Obsolete.

97501:  The name, in the US and Far Eastern markets, of the 8750 PABX. Obsolete.

97502:  See FastPath2.

9770:  See FastPath2.

9910:  Uninterruptible power supplies (UPS) for System/390, AS/400 and RS/6000 first announced February 1994. Not supported on eserver zSeries 900.