Take the 2-minute tour ×
Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

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.

share|improve this question
    
You could image the server, replace the drives, build a new RAID6 and restore the image. –  DanBig Jul 3 '12 at 17:04
    
After you've rebuilt your array, investigate how to enable Data Scrubbing to detect bad blocks before they are needed during a rebuild en.wikipedia.org/wiki/RAID#Data_scrubbing_.2F_Patrol_read –  Brian Swift Jul 3 '12 at 18:32

1 Answer 1

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.

share|improve this answer
    
The data does not appear to be corrupt. The Server is running fine an it appears 7 of the 8 disks are still participating in the Array. I have just finished an offsite backup and I am using a new Backup software (Acronis Backup and Recovery Virtual Edition). –  chuck0410 Jul 4 '12 at 22:28

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.