Adaptec 412R User Guide - Page 87

Common SCSI Bus Problems

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Troubleshooting Common SCSI Bus Problems SCSI Bus problems can usually be attributed to cabling issues or a faulty SAF-TE disk I/O card. Refer to the chart below and review troubleshooting and fault isolation procedures to assist you in identifying the suspect component. Symptom Host SCSI BIOS scan hangs. Probable Cause Termination or SCSI ID conflict. Not all disk drives connected to the HBA channels are displayed during boot. Termination or SCSI ID conflict. Solution Check the Host ID and proper system configuration. I Check that the SCSI connectors are properly connected. I Check SCSI ID assignments. I If the enclosure is the daisy-chained enclosure, check the I/O card jumper settings in the last enclosure on the chain. 6-3

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6-3
Troubleshooting
Common SCSI Bus Problems
SCSI Bus problems can usually be attributed to cabling issues or a
faulty SAF-TE disk I/O card. Refer to the chart below and review
troubleshooting and fault isolation procedures to assist you in
identifying the suspect component.
Symptom
Probable Cause
Solution
Host SCSI BIOS scan
hangs.
Termination or SCSI
ID conflict.
Check the Host ID
and proper system
configuration.
Not all disk drives
connected to the HBA
channels are
displayed during
boot.
Termination or SCSI
ID conflict.
■
Check that the SCSI
connectors are
properly
connected.
■
Check SCSI ID
assignments.
■
If the enclosure is
the daisy-chained
enclosure, check
the I/O card
jumper settings in
the last enclosure
on the chain.