Adaptec SAS RAID Controllers Instalační příručka stáhnout pdf (Strana 95)

Appendix D Troubleshooting 81

■ If copyback is enabled—Data is automatically moved back to its original location

once the HBA detects that the failed drive has been replaced. No action is

required.

Failed Disk Drive Not Protected by a Hot-Spare

When an array is not protected by a hot-spare, if a disk drive in that array fails,

remove and replace the failed disk drive. The HBA detects the new disk drive and

begins to rebuild the array.

If the HBA fails to rebuild the array, check that the cables, disk drives, and HBAs are

properly installed and connected. Then, if necessary, use Sun StorageTek RAID

Manager GUI to rebuild the array. For instructions, refer to the Sun StorageTek RAID

Manager Software User’s Guide or online Help.

Failure in Multiple Arrays Simultaneously

If there is a disk drive failure in more than one array at the same time (one failure per

array), and the arrays have hot-spares protecting them, the HBA rebuilds the arrays

with these limitations:

■ A hot-spare must be of equal or greater size than the failed disk drive it’s

replacing.

■ Failed disk drives are replaced with hot-spares in the order in which they failed.

(The array that includes the disk drive that failed first is rebuilt first, assuming an

appropriate hot-spare is available—see bullet above.)

If there are more disk drive failures than hot-spares, see “Failed Disk Drive Not

Protected by a Hot-Spare” on page 81.

If copyback is enabled, data is moved back to its original location once the HBA

detects that the failed drive has been replaced.

Disk Drive Failure in a RAID 0 Array

Because RAID 0 volumes do not include redundancy, if a disk drive fails in a RAID 0

array, the data can’t be recovered.

Correct the cause of the failure or replace the failed disk drives. Then, restore your

data (if available).

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Adaptec SAS RAID Controllers Instalační příručka Strana 95