Raid 10 (4 drives)- customer only sent me the 2 failed striped ones.

[osity]

A client had a RAID 10 setup and two drives failed out of the 4.
Instead of sending me all 4 drives, he sent me the two striped ones and kept the mirrored ones that were functional but they were not showing the data for him once it was rebuilt.
Are the striped ones all I need to get started? I would imagine that my approach would be to image the entire 2TB drives and reassemble the RAID afterwards.
This seems pretty straight forwared but I would like to hear your thoughts....
Thanks

[DataMedics]

You would only need two opposite mirror set drives to rebuild a RAID 10, assuming that all the drives were in sync. Your customer rebuilding the RAID using the other two drives however is a really foolish thing to do. It's very possible that one of the two failed drives was down for months or even years and is completely useless.

Just confirm that the two drives aren't mirrors of each other in Hex, then rebuild it just like a RAID 0. If you need help feel free to PM me.

[osity]

Drives have maybe a dozen bad sectors each. Other than that they copy at about 95MB/s.
I've copied all sectors of Drive#1 onto another drive the same size.
I'm doing drive #2 now. Should take about 6 hours.
I was then planning on using Reclaime me raid to reassemble, although I'm not sure if this part will work out as these drives are HFS+ and Im working on a PC.
Is there a similar tool for mac?

[lcoughey]

You should be able to do it from windows. If you don't have any luck with Reclaime, you can always try R-Studio. The big challenge will be to find the last 2 working drives, rather than using a drive that is out of sync.

[DataMedics]

+1 for R-Studio. It makes RAID reassembly really easy, and can handle HFS+ pretty well. Unless you're using Apple Core Storage as the way of building the RAID...I assume being RAID 10 they are using an actual hardware RAID?

[osity]

It was likely software raid as its out of a Akitio HFS+ unit.
It looks like the client sent me the right drives. I was able to reassemble the striping set and access data. Even thought its HFS+ the software shows all the files. yay! Thanks guys!