A P P E N D I X D |
Troubleshooting |
This appendix provides basic troubleshooting information and solutions for solving HBA problems. The appendix contains the following sections:
If you encounter difficulties installing or using the Sun StorageTek SAS RAID Internal HBA, check these items first:
Try disconnecting and reconnecting disk drives from the HBA.
If you are still unable to resolve a problem, you can find additional troubleshooting information and direction at http://www.sun.com.
An alarm will sound when an error occurs. To silence the alarm, use BIOS RAID Configuration utility. See Using the BIOS RAID Configuration Utility.
This section explains how to recover when a disk drive fails:
When an array is protected by a hot-spare, if a disk drive in that array fails the hot-spare is automatically incorporated into the array and takes over for the failed drive.
1. Remove and replace the failed disk drive (following manufacturer’s instructions).
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.
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:
If there are more disk drive failures than hot-spares, see Failed Disk Drive Not Protected by a Hot-Spare.
If copyback is enabled, data is moved back to its original location once the HBA detects that the failed drive has been replaced.
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).
Except in RAID 6 and RAID 60 arrays (see Selecting the Best RAID Level), if more than one disk drive fails at the same time in the same array, the data cannot be recovered.
Correct the cause of the failure or replace the failed disk drives. Then, restore your data (if available).
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