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kw1162
15 pts.
 Does a RAID 5 rebuild include deleted data?
RAID 5, RAID rebuild
I understand that common data deletion removes the header and leaves the data. Also most disk mirroring software will include the deleted data. The only real way to normally get rid of deleted data is to copy the existing data to a new drive. If I choose to replace the drives in my array, would the rebuild process include deleted data?

Software/Hardware used:
windows server Dell PERC6II
ASKED: November 28, 2012  9:42 PM
UPDATED: November 29, 2012  2:05 PM
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Answer Wiki:
As the rebuild happens at the block level, not the file level anything that should be on the disk, including deleted files, would be copied to the new disk.
Last Wiki Answer Submitted:  November 29, 2012  2:05 pm  by  Michael Tidmarsh   14,060 pts.
All Answer Wiki Contributors:  Michael Tidmarsh   14,060 pts. , Denny Cherry   64,550 pts. , kw1162   15 pts.
To see all answers submitted to the Answer Wiki: View Answer History.


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When you “replace” drives, are you meaning that you are replacing the RAID array and restoring data from backups? Or are you replacing drives, e.g., due to a drive failure, and letting the RAID controller “rebuild” data on the new drive? — Tom

TomLiotta
 110,175 pts.
 

You should already have backups of your disks in another location.  So, if your RAID did crash, you “hopefully” did have a daily, weekly, and monthly backup on file, right?

Harisheldon
 5,475 pts.