Hitachi Universal Storage Platform V - Troubleshooting Error Conditions

5-2 Troubleshooting
Hitachi Universal Storage Platform V/VM Configuration Guide for SGI
®
IRIX
®
Host Attachment
Troubleshooting Error Conditions
Table 5-1 lists potential error conditions that may occur during the USP V
installation and provides instructions for resolving each condition. If you
cannot resolve an error condition, please contact your Hitachi Data Systems
representative for help, or call the Hitachi Data Systems Support Center for
assistance.
Table 5-1 Troubleshooting
Error Condition Recommended Action
The logical devices are not
recognized by the system.
Make sure that the READY indicator lights on the USP V system are ON.
Make sure that the fibre cables are correctly installed and firmly
connected.
Make sure that the LUNs are properly configured. The LUNs for each
target ID must start at 0 and continue sequentially without skipping any
numbers.
Make sure that the SCSI IDs (unit IDs) on each bus are unique. Do not
connect two devices with the same SCSI ID on the same bus.
The SGI system does not
reboot properly after hard
shutdown
If the SGI system is powered off without executing the shutdown
process, wait three minutes before restarting the SGI system. This
allows the USP V internal time-out process to purge all queued
commands so that the USP V is available (not busy) during system
startup. If the SGI system is restarted too soon, the USP V will continue
trying to process the queued commands and the SGI system will not
reboot successfully.