page_title: Sun4d
section_title: SPARCserver 1000
hierarchical_section_title: Sun4d / Machines / SPARCserver 1000
caption_attribution_description: English: Back of a running Sun SPARCserver-1000E. This machine had recently been moved from a fileserver to a compute server role, hence the large number of unused IO ports.
context_page_description: Sun4d is a computer architecture introduced by
  Sun Microsystems in 1992. It is a development of the earlier Sun-4 architecture, using the XDBus system bus,
  SuperSPARC processors, and SBus I/O cards. The XDBus
  was the result of a collaboration between Sun
  and Xerox; its name comes from an earlier Xerox
  project, the Xerox Dragon. These were Sun's largest machines to date, and
  their first attempt at making a mainframe-class server.
context_section_description: The SPARCserver 1000 is a 5U rackmountable chassis with four 40 MHz XDBus slots,
  and space for four half-height 3.5" SCSI drives plus two half-height
  front-accessible 5.25" SCSI drives (typically used for CD-ROM and DAT). Each
  system board connects to one XDBus and provides two MBus slots
  for CPUs, three SBus slots for I/O boards, four banks of memory
  (four SIMMs apiece), and builtin SCSI-2, 10baseT Ethernet, and two serial ports.
  Maximum configuration: eight CPUs and 2 GB RAM.
  The SPARCserver 1000E has a slightly faster XDBus (50 MHz). The system boards are not backwards compatible.
  The SPARCserver 1000, like earlier Sun-4/xxx servers, has a set of LEDs on each system board that display diagnostics on POST, and CPU load while running. These allow the user to see at a glance how busy each processor on the system is. They are informally referred to as "Cylon" displays, because of the way each displays a single light bouncing back and forth resembles the scanner of the robots in the original Battlestar Galactica television series.
  The SPARCserver 1000 will run a slightly-patched Linux 2.4 kernel in SMP mode. 
  A single octo-processor SPARCserver 1000 helped 117 SPARCstation 20 Model HS11 units, 87 with two 100 MHz hyperSPARC processors and 30 with four 100 MHz hyperSPARC processors, to render Toy Story.
caption: SS1000E
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