Hi, We're running a 2008R2 server with 8 independent 250g drives on a 3ware RAID controller (this is not configured for RAID but 8 individual volumes). Everything was fine until a power failure and one of the drives disappeared. The controller wouldn't recognize it.
So I replaced it with another 250g drive, same model and so on. I re-copied the data back to it and one of the folders keeps saying "device not ready" when trying to access it (after all files copied successfully). Looks like I have another bad drive so I replaced it again with a new 500G drive that's been working in another server for a couple of months now. I added the drive, re-copied everything over again and still, I'm getting device not ready from some folders on the drive (this isn't during the copy, the copy goes fine).
Any suggestions? I can't see both drives being bad. The 250 came from a previously working RAID 10 array and the 500 is brand new and tested.