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Broken RAID5 array. Seeking assistance.

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Mark Jamison
Broken RAID5 array. Seeking assistance.
on Jun 2, 2012 at 11:11:12 pm

After a power failure, one of our servers isn't booting due to a problem with it's RAID 5 array.

I took photos of every possible option available, which you can find here:

Since RAID 5 uses a minimum of 3 disks, and thats all the server physically has, they should all be part of the array. However, the utility seems to suggest there are 2 arrays, which doesnt sound logically possible.

I assume (hope) it should be possible to delete the erroneous array with the orphan drive, and re-add it back to the real array with the other 2 drives, and RAID 5 will repopulate the orphan with the proper data via parity. But how would I possibly know which array to delete? If I delete the wrong one, with the 2 out of 3 disks, it will be disastrous.

And when it gives the option to delete one of the arrays, the choices are identical due to all 3 drives being the same. How do I choose?

Thanks much for any tips!

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