RAID Management
The subsystem can implement several different levels of RAID technology. RAID levels supported by the subsystem are shown below.
RAID Level | Description |
| Min. Drives |
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0 | Block striping is provide, which yields higher |
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performance than with individual drives. There is | 1 |
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| no redundancy. |
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1 | Drives are paired and mirrored. All data is 100% |
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duplicated on an equivalent drive. Fully | 2 |
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| redundant. |
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Extension of RAID 1 level. It has N copies of the |
| N | ||
mirror | disk. |
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3 | Data is striped across several physical drives. | 3 |
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Parity protection is used for data redundancy. |
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5 | Data is striped across several physical drives. | 3 |
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Parity protection is used for data redundancy. |
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| Data is striped across several physical drives. |
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6 | Parity protection is used for data redundancy. | 4 |
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Requires N+2 drives to implement because of |
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| Mirroring of the two RAID 0 disk arrays. This |
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0 + 1 | level provides striping and redundancy through | 4 |
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| mirroring. |
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| Striping over the two RAID 1 disk arrays. This |
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10 | level provides mirroring and redundancy through | 4 |
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| striping. |
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JBOD | The abbreviation of “Just a Bunch Of Disks”. | 1 |
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JBOD needs at least one hard drive. |
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