Dell PERC 4/SI - Manual (Page 46)

l Using the Objects—> Physical Drive menu.
Key
When you select any configuration option, a list of all physical devices connected to the current controller appears. Perform the following steps to designate a
drive as a hot spare:
1. On the Management Menu select Configure, then a configuration option.
2. Press the arrow keys to highlight a hard drive that displays as READY.
3. Press to designate the drive as a hot spare.
4. Click YES to make the hot spare.
The drive displays as HOTSP.
5. Save the configuration.
Objects Menu
1. On the Management Menu select Objects—> Physical Drive.
A physical drive selection screen appears.
2. Select a hard drive in the READY state and press to display the action menu for the drive.
3. Press the arrow keys to select Make HotSpare and press .
The selected drive displays as HOTSP.
Rebuilding Failed Hard Drives
If a hard drive fails in an array that is configured as a RAID 1, 5, 10, or 50 logical drive, you can recover the lost data by rebuilding the drive with another drive
or drives. You can manually rebuild one drive or a group of drives using the manual rebuild procedures in this section.
If a system is rebooted during a rebuild operation, it is possible for the rebuild to restart from 0 percent.
Rebuild Types
Table 4 -13 describes automatic and manual rebuilds.
Table 4-13. Rebuild Types
NOTE: An array may take longer to rebuild when under high stress; for example, when there is one rebuild I/O operation to five host I/O operations.
NOTE: In a clustering environment, if a node fails during a rebuild, the rebuild is re-started by another node. The rebuild on the second mode starts at
zero percent.
Type Description
Automatic
Rebuild
If you have configured hot spares, the RAID controller automatically tries to use them to rebuild failed disks. Select Objects—> Physical
Drive to display the list of physical drives while a rebuild is in progress. The hot spare drive changes to REBLD A[array number]-[drive
number], indicating the hard drive is being replaced by the hot spare. For example, REBLD A01-02 indicates that the data is being rebuilt on
hard drive 2 in array 1.
Manual
Rebuild
Manual rebuild is necessary if no hot spares with enough capacity to rebuild the failed drives are available.You must insert a drive with
enough storage into the subsystem before rebuilding the failed drive.