[SASAG] Broken Raid 5 Repair

spam at tprophet.org spam at tprophet.org
Wed Sep 9 10:47:53 PDT 2009

The best presentation I've ever seen on this topic was at Defcon. While 
flippant and irreverent (this *was* Defcon after all), here's the slide 



Eric C. Aiken wrote:
> I seeking advice on repairing a broken RAID 5 Array.I have a 6 disk RAID 
> 5 array that lost a second drive.
> There are a number of commercial-ware products the report the ability to 
> repair the array.  I'm not sure of their abilities and secondly they all 
> seem windows NTFS focused.  What may complicate the is issue is the 
> filesystem is XFS.
> There are a few folks who have repaired their arrays by dd'ing the 
> individual disk to  images files and rebuilding from there.  I like to 
> hear anybody else's experience with repair broken arrays.  Any tools 
> (commercial, open source, shareware), processes or any other good's and 
> bad's you might have experienced.
> Thanks
> Eric C. Aiken
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