I had a 4 disk software based raid5. Two drives failed at the same time, so I'm at 2/4 operational drives. I have run raid5 with 2 drives before, but this doesn't seem to want to mount. Can you add a spare and rebuild the raid or am I hosed?
Why can raid5 run on two drives, but if two fail from a 4 drive array you can no longer use the array?