I have an HP Server with a HP P400 Controller with 8 72GB drives in a Raid 6 array.
I had a drive fail and replaced it, but it did not rebuild because I have Hard Read errors on 2 other drives, so I am essentially running raid 5 now.
It is my understanding that I will now have to do a backup and restore and replace the 2 drives with hard read errors. I don't think the hard read errors on the 2 drives can be repaired – I wish I could repair one of them, but I don't know how that could be done. Am I correct?
My question is: Can I power down the server and replace the 2 drives (I've already replaced the one drive that did not rebuild).
After replacing the 2 drives, perform a Restore from Backup or will I need to break the Raid Array and recreate it?
The Server is running fine now but a failure in the future is certain. I may wait until it actually fails.
If I have to rebuild the Array can you point me towards instructions.
Thank you for any opinion or suggestions.
Best Answer
Raid 6 means you have 2 drives that can fail before data-loss. If you removed 1 due to failure... and have 2 more with read-errors... your data is probably corrupted.
Whatever method you used to initially build the RAID should also have a tool to rebuild/reassemble the raid with your new disks. Without knowing more details about your hardware, I can't be more specific.