RAID 30 and 50 Schemes
You can configure two RAID 5 sets using the RAID controller and then use software (Disk Utility) to stripe those two sets.
RAID 30 or 50
Appears
as
RAID 3 or 5 | RAID 3 or 5 | Disk 1 |
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Use software RAID to stripe two RAID 3 or 5 sets, which appear as one maximum capacity RAID set.
RAID 30 or 50
Appears
as
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RAID 3 or 5 |
| RAID 3 or 5 |
| Disk 1 | ||||
RAID | 3 or 5 |
| RAID 3 or 5 |
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You can use software RAID to stripe like pairs on the same or separate controllers.
RAID 31 or 51
Appears
as
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RAID 3 or 5 |
| RAID 3 or 5 |
| Disk 1 | ||||
RAID 3 or 5 |
| RAID 3 or 5 |
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You can use software RAID to mirror like pairs on the same or separate controllers.
Planning RAID Storage for the Xserve RAID System | 77 |