Mylex eXtremeRAID Instalační příručka stáhnout pdf (Strana 175)

Maintenance Processes

Manual No. 771961 6-3

Running a Device Rebuild

If a single device in a fault tolerant system fails, the system is spared data

loss by virtue of the striping with parity present across the logical drive

(RAID 3, RAID 5) or the total redundancy of data (RAID 1, RAID 0+1). The

failed drive needs to be replaced, and the failed drive’s data must be rebuilt

on a new drive to restore the system to fault tolerance once again.

The device rebuild function performs this task. A failed drive’s data can be

rebuilt to:

• The original drive if this drive happens to be still functional

• A hot spare (standby) drive present for just this purpose, or

• A drive inserted in place of the failed drive.

If you need to carry out a device rebuild, perform the following procedure:

1. Reinsert the removed drive that caused the failure (if it is still a good

drive), or replace the failed drive with a new drive of equal or greater

capacity.

2. Double-click the relevant physical device in the Controller View

window.

The Disk Device Information dialog box will open, and the Rebuild

button should be available (Figure 6-2):

Figure 6-2. Rebuild Button Available for This Disk Device

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Mylex eXtremeRAID Instalační příručka Strana 175