HP Smart Array Cluster Storage System

Troubleshooting
D-10 HP Smart Array Cluster Storage System User Guide
HP CONFIDENTAL
Writer: Rob Weaver File Name: j-appd Troubleshooting
Codename: Aurora Part Number: 240333-003 Last Saved On: 11/6/02 1:07 PM
Failure of Automatic Data Recovery
If the online LED of the replacement drive stops flashing during Automatic Data
Recovery, two possible causes are:
• The replacement drive is failed (amber failure LED illuminated or other LEDs
not illuminated) and is producing unrecoverable disk errors. Remove and replace
the failed replacement drive.
• The Automatic Data Recovery process may have abnormally terminated, because
of a non-correctable read error (such as a SCSI bus signal integrity problem)
from another physical drive during the recovery process.
Reboot the system and retry Automatic Data Recovery. If this does not work, backup
all data on the system, do a surface analysis (using User Diagnostics), and restore the
data from backup.
Replacing a Drive
Replacement drives must have a capacity no less than that of the smallest drive in the
array. The controller immediately fails drives with insufficient capacity before
Automatic Data Recovery can begin.
CAUTION: Sometimes, a drive that has previously been failed by the controller may
seem to be operational after the system power is cycled, or (for a hot-plug drive)
after the drive has been removed and reinserted. However, continued use of such
marginal drives may eventually result in data loss. Replace the marginal drive as
soon as possible.
A hot-plug drive is available for removal and replacement at any time, regardless of
the state of the host or storage system power. Both system performance and fault
tolerance are affected until the rebuild operation is completed. A rebuild can take
several hours, even if the system is not busy during the rebuild.
During hot-plug drive insertion, all disk activity on the array is paused while the new
drive is spinning up (approximately 10 seconds). If the drive is inserted while power
is on, in a fault-tolerant configuration, data recovery onto the replacement drive
begins automatically (indicated by the flashing online LED).