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The RAID volume data verification process identifies any inconsistencies or bad data on a RAID 0, RAID 1, RAID 5, or RAID 10 volume.
The RAID volume data verification and repair process identifies and repairs any inconsistencies or bad data on a RAID 1, RAID 5, or RAID 10 volume.
The following describes what occurs for each RAID level:
| RAID Level |
Verify |
Verify & Repair |
| RAID 0 |
Bad blocks are identified. |
N/A |
| RAID 1 |
Bad blocks are identified |
Bad blocks are reassigned. |
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Data on the mirror drive is compared to data on the source drive. |
If the data on the mirror drive does not match the data on the source drive, the data on the mirror is overwritten with the data on the source. |
| RAID 5 |
Bad blocks are identified. |
Bad blocks are reassigned. |
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Parity is recalculated and compared to the stored parity for that stripe. |
If the newly calculated parity does not match the stored parity, the stored parity is overwritten with the newly calculated parity. |
| RAID 10 |
Bad blocks are identified. |
Bad blocks are reassigned. |
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Data on the mirror is compared to data on the source. |
If the data on the mirror does not match the data on the source, the data on the mirror is overwritten with the data on the source. | |
Related Topic
How do I verify or verify & repair RAID volume data?
This applies to:
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