HP Surestore Disk Array 12h SGI IRIX Configuration Guide - Page 35

Troubleshooting

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2 TROUBLESHOOTING If the system has an error condition, see Table 1 for recommended actions. If you are unable to resolve an error condition, ask your HP service representative for assistance. Table 1. Error Conditions Error Condition Recommended Action The logical devices are not Be sure the READY indicator lights on the disk array are ON. recognized by the system. Be sure the SCSI cables are correctly installed and firmly connected. Be sure the SCSI terminators are properly connected. Be sure the SCSI TIDs are properly configured. The LUNs for each SCSI TID must start at 0 and continue sequentially without skipping any numbers. The SGI system does not reboot properly after hard shutdown. The SGI system hangs. Be sure the SCSI IDs on each SCSI bus are unique. Do not connect two devices with the same SCSI ID on the same SCSI bus. If the system is powered off without executing the shutdown process, wait three minutes before restarting the system. This allows the disk array's internal time-out process to purge all queued commands so that the disk array is available (not busy) during system startup. If the system is restarted too soon, the disk array will continue trying to process the queued commands, and the system will not reboot successfully. Make sure that the TIDs are set 0 through 6 and 8 through 15 and that TID 7 has been reserved for the fast-wide SCSI controller card. 35

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35
2
TROUBLESHOOTING
If the system has an error condition, see Table 1 for recommended actions. If you are
unable to resolve an error condition, ask your HP service representative for assistance.
Table 1.
Error Conditions
Error Condition
Recommended Action
The logical devices are not
recognized by the system.
Be sure the READY indicator lights on the disk array are ON.
Be sure the SCSI cables are correctly installed and firmly connected.
Be sure the SCSI terminators are properly connected.
Be sure the SCSI TIDs are properly configured. The LUNs for each SCSI TID must
start at 0 and continue sequentially without skipping any numbers.
Be sure the SCSI IDs on each SCSI bus are unique. Do not connect two devices with
the same SCSI ID on the same SCSI bus.
The SGI system does not
reboot properly after hard
shutdown.
If the system is powered off without executing the shutdown process, wait three
minutes before restarting the system. This allows the disk array’s internal time-out
process to purge all queued commands so that the disk array is available (not busy)
during system startup. If the system is restarted too soon, the disk array will continue
trying to process the queued commands, and the system will not reboot successfully.
The SGI system hangs.
Make sure that the TIDs are set 0 through 6 and 8 through 15 and that TID 7 has
been reserved for the fast-wide SCSI controller card.