DELL MD3220 사용자 설명서

Configuration: Disk Groups and Virtual Disks

5 To assign hot spares, in the Hot Spare Coverage window, select a disk 

group in the 

Hot spare coverage area.

6 Review the information about the hot spare coverage in the Details area.
7 Click Assign.

The 

Assign Hot Spare window is displayed.

8 Select the relevant Physical disks in the Unassigned physical disks area, as 

hot spares for the selected disk and click 

OK.

9 To unassign hot spares, in the Hot Spare Coverage window, select physical 

disks in the 

Hot spare physical disks area.

10 Review the information about the hot spare coverage in the Details area.
11 Click Unassign.

A message prompts you to confirm the operation.

12 Type yes and click OK.

A valuable strategy to protect data is to assign available physical disks in the 

storage array as hot spares. A hot spare adds another level of fault tolerance to 

the storage array.
A hot spare is an idle, powered-on, stand-by physical disk ready for immediate 

use in case of disk failure. If a hot spare is defined in an enclosure in which a 

redundant virtual disk experiences a physical disk failure, a rebuild of the 

degraded virtual disk is automatically initiated by the RAID controller 

modules. If no hot spares are defined, the rebuild process is initiated by the 

RAID controller modules when a replacement physical disk is inserted into 

the storage array.

The MD3200 series supports global hot spares. A global hot spare can replace 

a failed physical disk in any virtual disk with a redundant RAID level as long 

as the capacity of the hot spare is equal to or larger than the size of the 

configured capacity on the physical disk it replaces, including its metadata.

book.book  Page 113  Monday, June 21, 2010  11:00 AM