User's Manual

Hard Drive Installation and Replacement
E-6 HP Smart Array 641/642 Controller User Guide
HP CONFIDENTIAL
Writer: John Turner File Name: m-appe hard drive installation & replacement
Codename: darkmatter - antimatter Part Number: 309311-001 Last Saved On: 11/7/02 5:07 PM
In general, approximately 15 minutes is required to rebuild each gigabyte. The actual
rebuild time depends on:
• The level of rebuild priority for the logical drive (this is set using one of the array
configuration utilities that are described in Chapter 5)
• The amount of I/O activity occurring during the rebuild operation
• The disk drive speed
• The number of drives in the array (for RAID 5 and RAID ADG)
For example, the rebuild time when using 9-GB drives in a RAID 5 configuration
varies from 10 minutes per gigabyte (for three drives) to 20 minutes per gigabyte (for
14 drives).
Failure of Automatic Data Recovery
If the Online LED of the replacement drive stops blinking during automatic data
recovery, there are three possible causes:
• If the Online LED is glowing continuously, automatic data recovery was
successful and has finished.
• If the amber failure LED is illuminated or other LEDs go out, the replacement
drive has failed and is producing unrecoverable disk errors.
Remove and replace the failed replacement drive.
• If the automatic data recovery process has abnormally terminated, one possible
cause is a non-correctable read error on another physical drive. The system may
temporarily become operational if rebooted. In any case, locate the faulty drive,
replace it, and restore data from backup.
General Aspects of Drive Replacement
Before replacing a degraded drive, use Insight Manager to examine the error counters
recorded for each physical drive in the array to confirm that such errors are not
presently occurring. Refer to the Insight Manager documentation on the Management
CD for details.