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|
 Sun 2/120 server with SMD disk tower | |
| Developer | Sun Microsystems |
|---|---|
| Type | Workstation |
| Released | November 1983; 42 years ago (November 1983) |
| Introductory price | 2/120:US$29,300 (equivalent to $71,000 in 2024[1]) 2/160:US$48,800 (equivalent to $118,000 in 2024[1]) |
| CPU | Motorola 68010 |
| Predecessor | Sun-1 |
| Successor | Sun-3 |
TheSun-2 series ofUNIXworkstations andservers was launched bySun Microsystems in November 1983.[2] As the name suggests, the Sun-2 represented the second generation of Sun systems, superseding the originalSun-1 series. The Sun-2 series used a 10 MHzMotorola 68010microprocessor with a proprietary Sun-2Memory Management Unit (MMU), which enabled it to be the first Sun architecture to run a fullvirtual memory UNIX implementation,SunOS 1.0, based on4.1BSD. Early Sun-2 models were based on theIntelMultibus architecture, with later models usingVMEbus, which continued to be used in the successorSun-3 andSun-4 families.
Sun-2 systems were supported in SunOS until version 4.0.3.
A port to support Multibus Sun-2 systems inNetBSD was begun in January 2001 from the Sun-3 support in the NetBSD 1.5 release. Code supporting the Sun-2 began to be merged into the NetBSD tree in April 2001.[3] sun2 is considered a tier 2 support platform as of NetBSD 7.0.1.[4]
Models are listed in approximately chronological order.
| Model | CPU board | Display | Max. RAM | Chassis |
|---|---|---|---|---|
| 2/120 | Sun-2 Multibus or Sun-2 Multibus Prime | Monochrome | 8 MB | 9-slot Multibus (deskside) |
| 2/170 | Sun-2 Multibus or Sun-2 Multibus Prime | Optional | 8 MB | 15-slot Multibus (rackmount) |
| 2/50 | Sun 2050 VME | Monochrome | 8 MB | 2-slot VME (desktop) |
| 2/130 | Sun 2050 VME | Monochrome | 8 MB | 12-slot VME (deskside) |
| 2/160 | Sun 2050 VME | Color | 8 MB | 12-slot VME (deskside) |
A desktop disk and tape sub-system was introduced for the Sun-2/50 desktop workstation. It could hold a5 ¼" disk drive and 5 ¼"tape drive. It usedDD-50 (sometimes erroneously referred to as DB-50) connectors for itsSCSI cables, a Sun specific design. It was often referred to as a "Sun Shoebox".
Sun-1 systems upgraded with Sun-2 Multibus CPU boards were sometimes referred to as the2/100U (upgraded Sun-100) or2/150U (upgraded Sun-150).
A typical configuration of a monochrome 2/120 with 4 MB of memory, 71 MB SCSI disk and 20 MB 1/4" SCSI tape cost $29,300 (1986 US price list[5]).
A color 2/160 with 8 MB of memory, two 71 MB SCSI disks and 60 MB 1/4" SCSI tape cost $48,800 (1986 US price list[5]).
A Sun 2/170 server with 4 MB of memory, no display, two Fujitu Eagle 380 MB disk drive, one Xylogics 450 SMD disk controller, a 6250 bpi 1/2 inch tape drive and a 72" rack cost $79,500 (1986 US price list[5]).
Sun 2/120 (9 slot deskside) and 2/170 (15 slot rackmount) systems were based on theMultibus architecture. The CPU board was based on a 10 MHz 68010 processor with a proprietary Sun Memory Management Unit (MMU) and could address 8 MB of physical and 16 MB of virtual memory. The top 1 MB of physical memory address space was reserved for the monochrome frame buffer. The Multibus CPU board supported the Sun-1 parallel keyboard and mouse as well as two serial ports.
The Sun 2/50 (2 slot desktop), Sun 2/130 (12 slot monochrome deskside) and Sun 2/160 (12 slot color deskside) used quad-depth, triple height EurocardVMEbus CPU boards. TheVMEbus CPU board was based on the same design as theMultibus CPU but also included 2 MB or 4 MB of memory, the Sun-2 monochrome frame buffer, and 10 Mbit/s Thick Ethernet on board.
Sun provided 1 MB Multibus memory boards and 1 MB and 4 MB VMEbus memory boards but only supported configurations with a maximum of 4 MB RAM. Companies such as Helios Systems also made 4 MB memory boards that would work in Sun systems.
A common frame buffer was the Sun-2 Prime Monochrome Video. This board provided an 1152x900 monochrome display withTTL orECL video signals, and keyboard and mouse ports. It normally occupied the top 1 MB of physical memory address space. There was also a Sun-2 Color Video board available that provided an 1152x900 8-bit color display. This board occupied the top 4 MB of address space.
42 MBMFM disks were commonly used for storage. Two disks could be connected to anAdaptec MFM/SCSI and then to a Sun-2 Multibus Serial/SCSI Host Adapter. The SCSI board provided two additional serial ports. For larger storage requirements, 65, 130, and 380 MBSMD disks were connected to aXylogics 450 SMD Controller. The SMD controller could support four disks even though Sun only supported two. A 20 MBQIC tape drive could be connected through anArchive QIC/SCSI converter. The system also supported 1/2" tape drives connected to a Computer Products Corporation TAPEMASTER or a Xylogics 472 board.
An Ethernet connection was provided by a Sun board based on the Intel 82586 chip, or a3Com 3c400 board. The server could supportdiskless Sun-2/50 clients through the Ethernet board.
Other supported Multibus boards included the Sky Computer Floating Point Processor, Sun ALM (Asynchronous Line Multiplexer) with 8 serial ports, and Sun SunLink Communications Processor (SCP) forSNA andX.25 connectivity.
BYTE in August 1984 described the Sun-2/120 as a "VAX-class machine", with "superb graphics and excellent response time under loading".[6]
{{cite book}}:|work= ignored (help)| Hardware |
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