HP D2D .HP D2D Backup System user guide (EH985-90907, March 2011) - Page 172

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

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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 46 Status showing multiple disk failure (HP D2D2500 Series) . The device operating system is not stored on any of the disks, so the HP StoreOnce Backup System is still usable after replacing the failed disks. Use the RAID (Status) page of the Web Management Interface or the System Console to help you identify the disks that have failed. Figure 47 RAID showing two disk failures (HP D2D2500 Series) . Replace the disks, as described earlier in this chapter. When you power on again, the RAID will not rebuild automatically. The Summary page continues to show the RAID System as catastrophically failed. If you look at the Devices or Cartridges page, no information is available other than that the library is awaiting RAID initialization. 172 Hard disk replacement

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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 46 Status showing multiple disk failure (HP D2D2500 Series)
.
The device operating system is not stored on any of the disks, so the HP StoreOnce Backup System
is still usable after replacing the failed disks. Use the
RAID (Status)
page of the Web Management
Interface or the System Console to help you identify the disks that have failed.
Figure 47 RAID showing two disk failures (HP D2D2500 Series)
.
Replace the disks, as described earlier in this chapter. When you power on again, the RAID will not
rebuild automatically. The Summary page continues to show the RAID System as catastrophically
failed. If you look at the Devices or Cartridges page, no information is available other than that the
library is awaiting RAID initialization.
Hard disk replacement
172