Compaq 3200 manual Drive Rebuild, Expand Priority, Accelerator Ratio, Priority Settings

5-32Running the Array Configuration Utility

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.