User guide

6-34 Compaq Smart Array 431 Controller User Guide
Online RAID and Stripe Migration
Using CPQONLIN, you can modify both the RAID level and Stripe Size of an
existing logical drive while online. To migrate a drive, select the drive setting
option under the logical drive menu for the drive you wish to modify. Select
the new RAID level and/or stripe size from the choices presented to you. If the
new settings are valid, the migration will begin when you save your changes.
Failed Drives or Interim Recovery Mode
If a drive fails and hardware fault tolerance is enabled, operation continues.
Replace the drive as soon as possible. Select a logical drive and press F3 to
monitor the status of drive recovery (Figure 6-28).
Figure 6-28. Rebuilding logical drive
■ Interim Recovery: The logical drive is operating, but a failed drive has
not been replaced. Replace drive as soon as possible.
■ Ready for Recovery: The logical drives are queued for recovery. This
status is displayed when another logical drive is already rebuilding or
expanding.
■ Rebuilding: The array is operating and rebuilding a replacement drive or
an online spare, if one was assigned.
■ Logical Drive Failed: If you have one or more logical drives that are not
protected by fault tolerance in an array, the data on these logical drives
will be lost. The Array Configuration Utility shows the logical drives as
FAILED. After drive replacement, any fault-tolerant logical drives
rebuild. The logical drives that were not protected (FAILED) become
available for data (the devices are reactivated automatically). If you
have a backup of the data, restore the data now.