Hot-spare and standby
hot-spare drives supply additional protection to a RAID configuration. When
you select the RAID level for your configuration, consider the following:
RAID level | Can use a hot spare? | Can use a standby hot spare? |
0 | No | No |
1 | Yes | Yes |
1E | Yes | Yes |
5 | Yes | Yes |
5E* | Yes | Yes |
00 | No | No |
10 | Yes | Yes |
1E0 | Yes | Yes |
50 | Yes | Yes |
* RAID level-5E integrates a distributed hot-spare drive, but also can use traditional hot-spare and standby hot-spare drives. If a physical drive fails in a RAID level-5E logical drive and the configuration includes a hot-spare or standby hot-spare drive, the data is rebuilt on the hot-spare or standby hot-spare drive. A RAID level-5E compression does not occur. If a second physical drive fails in the RAID level-5E logical drive, a data compression will take place on the distributed hot-spare drive.
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