Справочник Пользователя для Q-Logic QLA12160
SCSI Problem Checklist
3 – Troubleshooting
3-2
DC8151101-00 B
3.4
SCSI Problem Checklist
■
Is the SCSI bus termination for the QLA12160 board set correctly (see
appendixes
appendixes
and
)?
■
Is the termination for all devices on the SCSI bus set correctly?
■
Were all SCSI devices powered up before you powered up the PC?
■
Does each device have a unique SCSI ID? Each device must have a unique
ID between 0 and 15. The QLA12160 board is set to SCSI ID 7 at the factory.
ID between 0 and 15. The QLA12160 board is set to SCSI ID 7 at the factory.
■
Are the cable lengths within limits? Be sure that the total length for cables
connected to the QLA12160 board does not exceed the length listed in
connected to the QLA12160 board does not exceed the length listed in
Table 3-1. Maximum Cable Length
Board and Mode
Cable Length
QLA12160
point-to-point
15 nodes
single-ended Ultra mode
point-to-point
15 nodes
single-ended Ultra mode
82 feet (25 meters)
39 feet (12 meters)
9.8 feet (3 meters)
39 feet (12 meters)
9.8 feet (3 meters)
4.9 feet (1.5 meters)
Table Notes
If you are mixing Ultra and non-Ultra SCSI devices, the total cable length cannot exceed the
maximum cable length established for Ultra SCSI devices.
If you are mixing Ultra and non-Ultra SCSI devices, the total cable length cannot exceed the
maximum cable length established for Ultra SCSI devices.
a
For four or fewer devices connected to the board.
b
For up to six devices connected to the board.