Compaq StorageWorks 4100 - RAID Array Uživatelská příručka stáhnout pdf (Strana 103)

5-30 Compaq StorageWorks RAID Array 4100 User Guide

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 5-26).

Figure 5-26. Controller Settings screen

Drive Rebuild

Drive rebuild occurs after a physical drive fails and is replaced. 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 RA4000 controller and select the

controller settings. If you chose low priority for drive rebuild, drive rebuilding

takes place when there is no I/O to the drive. If you choose 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.

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Compaq StorageWorks 4100 - RAID Array Uživatelská příručka Strana 103