Table C-2 Disk Board Default Scsi Disk Drive Id Numbers; Table C-3 Internal Scsi Lengths (Approximate); C.3 Scsi Cable Length; C.4 Scsi Termination - Sun Microsystems Ultra Enterprise 6000 System Manual

C

C.3 SCSI Cable Length

Location
Enterprise 6000 slot 1
Enterprise 5000 slot 1
Enterprise 4000 slot 1
SBus I/O board
Graphics I/O board
Disk board

C.4 SCSI Termination

C-2

Table C-2 Disk Board Default SCSI Disk Drive ID Numbers

Board Slot Disk 0,1
0 4,5
2 or 14* 0,1
4 2,3
6 8,9
*Enterprise 6000 systems: Disk boards can only be installed in slots 14 and 15.
The maximum combined length for a string of SCSI cables is six meters for
non-differential cables. For differential SCSI cables, the maximum is 25 meters.
To calculate the total length of a SCSI string, include external cables, internal
cables, and printed traces. Table C-3 lists measurements for Enterprise servers.

Table C-3 Internal SCSI Lengths (Approximate)

Internal Length Comments
3.7 meters Includes I/O board traces and cables to SCSI tray
3.7 meters Includes I/O board traces and cables to SCSI tray
1.4 meters Includes I/O board traces and cables to SCSI tray
0.43 meter Includes board traces only
0.43 meter Includes board traces only
0.64 meter Includes board traces only
The I/O board in slot 1 of any Enterprise server must be terminated. This slot
connects to the SCSI tray through cables and a connector on the centerplane.
An I/O board in any other slot does not require termination if no devices
connect to the SCSI bus on that board.
Ultra Enterprise 6000/5000/4000 Systems Manual—November 1996
Board Slot Disk 0,1
1 6,7
3 or 15* 10,11
5 12,13
7 14,15