RAID levels that can use a hot-spare or standby hot-spare drive
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:
[@more@]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 |
5EE * | Yes | Yes |
6 | Yes | No |
00 | No | No |
10 | Yes | Yes |
1E0 | Yes | Yes |
50 | Yes | Yes |
60 | Yes | No |
* RAID level-5E and RAID level-5EE integrate 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 or level-5EE 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 or RAID level-5EE compaction does not occur. If a second physical drive fails in the RAID level-5E or level-5EE logical drive, a data compression or compaction will take place on the distributed hot-spare drive.
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