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5-32 Running the Array Configuration Utility
Writer: Rickard Project: Compaq Smart Array 3200 Controller Reference Guide Comments: 340862-002
File Name: F-CH05.DOC Last Saved On: 12/7/98 1:22 PM
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Drive Rebuild, Expand Priority, and
Accelerator Ratio
To set the drive rebuild priority, expand priority, or accelerator ratio for a
controller, highlight the controller at the Main Configuration View screen and
select the Controller Settings option listed below Controller Options. The
Controller Settings screen appears (Figure 5-25).
Figure 5-25. Compaq SMART 3200 Controller settings screen
Drive Rebuild
Drive rebuild occurs after a physical drive fails and is replaced, or when a
physical drive fails in an array that has an online spare. Only logical drives
configured for fault tolerance (RAID 1, RAID 4, or RAID 5) on the array with
the failed physical drive will rebuild.
Priority Settings
To set the drive rebuild priority, highlight the Smart Array 3200 Controller and
select the Controller Settings. If you chose low priority for drive rebuilding (the
default), rebuild takes place only when the Smart Array 3200 Controller is not
busy handling normal I/O requests. Low priority has minimal effect on normal
I/O operations. With high priority, drive rebuilding occurs faster, at the expense
of normal I/O operations. Choosing high priority for drive rebuilding protects an
array, but the array is vulnerable to additional drive failures while a drive is
being rebuilt.