HP StoreOnce D2D4324 HP D2D25xx, 41xx and 43xx Backup System user guide (EH985 - Page 146

If several disks fail, Replacing the disks (HP D2D2500 Series)

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Figure 44 System console during RAID rebuild (HP D2D2500 Series) If several disks fail If several disk failures are reported at once, it is possible that the disks are fine while some other component has failed. In these situations care should be taken to rule out the possibilities of loose/broken cables, faulty RAID controllers or powered-down Capacity Upgrade Kits before replacing the disks. If the problem lies with components other than the disks, then there is a very good chance that no actual data loss has occurred. NOTE: If the System State shows that RAID has failed catastrophically and no RAID devices are available, the HP Smart Array RAID controller has failed and needs replacing. See the HP D2D Backup System Maintenance and Service Guide for more information. Replacing the disks (HP D2D2500 Series) If more than one disk fails on the HP D2D2500 Series, you will lose all data on the HP StoreOnce Backup System and the message on the Summary page warns that the RAID system has failed catastrophically. The RAID is not recoverable. Figure 45 Status showing multiple disk failure (HP D2D2500 Series) 146 Hard disk replacement

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Figure 44 System console during RAID rebuild (HP D2D2500 Series)
If several disks fail
If several disk failures are reported at once, it is possible that the disks are fine while some other
component has failed. In these situations care should be taken to rule out the possibilities of
loose/broken cables, faulty RAID controllers or powered-down Capacity Upgrade Kits before
replacing the disks. If the problem lies with components other than the disks, then there is a very
good chance that no actual data loss has occurred.
NOTE:
If the System State shows that RAID has failed catastrophically and no RAID devices are
available, the HP Smart Array RAID controller has failed and needs replacing. See the
HP D2D
Backup System Maintenance and Service Guide
for more information.
Replacing the disks (HP D2D2500 Series)
If more than one disk fails on the HP D2D2500 Series, you will lose all data on the HP StoreOnce
Backup System and the message on the Summary page warns that the RAID system has failed
catastrophically. The RAID is not recoverable.
Figure 45 Status showing multiple disk failure (HP D2D2500 Series)
146
Hard disk replacement