Raid 5 Question

[buster80]

Trying to work out the parity on a 4 disk raid 5

Drives are 500GB Seagate, w/ Adaptec controller.

3rd disk in the physical array failed and got replaced, on rebuild the whole thing failed. It was then initialized but not formatted

I have imaged all disks, the physical 4th disk had bad sectors (probably why it didnt rebuild but DDI got a perfect clone)

Array was 1.36TB and I know the Block size to be 256kb, Raid re constructor will only entertain a Parity of Backward 3-2-1. It give insignificant results for anything else.

However, on scanning the VIM Image I get a good file structure of the D:\ Partition and all the folders but...only small docs are ok, everything else will not open.

Would that suggest that the parity is wrong totally ?

thanks in advance

Attachments

[dobrevjetser]

Raid reconstructor is not that good for damaged raid sets. I think winhex and some serious sector checking is the only solution.

Dobre

[hddguy]

Backwards is standard for Adaptec RAID. Also, as RR gives OS:4, I guess is NTFS. Manual identification of config from sectors should allow good build in Winhex or r-studio. should not be too complex.

[buster80]

thanks guys, winhex did the trick (after alot of trial and error)

merci

andy

[pcimage]

Good work!!!