Specifications

5-4 Sun StorEdge A1000 and A3x00/A3500FC Best Practices Guide • November 2002
5.1.2 Disk Tray
This section contains the following topics:
■ Section 5.1.2.1, “RSM Tray” on page 5-5
■ Section 5.1.2.2, “D1000 Tray” on page 5-5
Several conditions can cause a disk tray to become inaccessible: a loose or defective
SCSI cable, a loose or defective SCSI terminator, a defective SCSI chip on the
controller board, or a defective component in the disk tray.
The problem can be sometimes difficult to isolate. Check the rmlog.log and system
logs for an error sense code or a FRU code. Check each cable connector and look for
bent pins. Ensure that each cable is properly connected.
A disk tray failure can cause all of the drives to report a failed status. RAID Manager
6 Recovery Guru can be used to determine the drive side channel failure. Individual
drives are not recoverable until the drive side channel failure status has been
resolved.
To perform further troubleshooting, you will need to have spare components on
hand: a controller FRU, SCSI cables, SCSI terminators, and the disk tray interface
board.
After the hardware component has been replaced, run a health check to verify the
status of the drive channel, drive tray, and each disk drive. You might need to power
cycle the controller module (not the entire rack), even though RAID Manager 6
Recover Guru instructions indicate that you don’t have to power cycle the controller
module if the controller firmware level is 2.5.2 or higher.
You need to power cycle the controller module if any of the following conditions
occur:
■ The LUN reconstruction does not start.
Note – LUN reconstructions occur one at a time serially.
■ Health check continues to report drive side channel failure.
■ Any of the drives in the disk tray do not come out of the failed or unresponsive
state to reconstruct.
Power cycling of the controller module enables the controller to re-scan the disk
trays. If you continue to encounter error messages while attempting to bring a drive
back online (reconstruct), physically remove the drive, wait 30 seconds, and then
reinstall the drive. Then use RAID Manager 6 Recovery Guru to reconstruct the
drive. See FIN I0670 about replacing the ESM card.