Server 2008 device not ready

Posted on 2011-05-09
Last Modified: 2012-05-11
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.

Question by:Meshman333
    LVL 46

    Expert Comment

    So how are you copying the data?   You need to "teach" the 3WARE that the replacement drive is a JBOD unit, then you format it, then copy the data from Win2K8.  If you are doing some sort of binary image copy that bypasses the 3ware then it wont work.  The 3WARE carves out metadata at the beginning of the disk, (actually quite a bit of metadata), so any other technique wont work

    Author Comment

    "So how are you copying the data?"

    I checked the drive was recognized, added it as an exportable device using the 3Ware bios, formatted it with Windows and did a standard file copy in Windows explorer from our backup server.  No errors were reported by the copy process.  Am I supposed to use some other method to re-populate the data?

    LVL 46

    Accepted Solution

    So, I don't understand one thing, you restored the data to this device, and now when you read it, after restoring, it says not ready on some of the folders, but you didn't get any errors while copying?  I would contact 3ware support directly, your card might have some bad ram or may have been damaged.  Do you have a battery on the controller?  Maybe the cache and/or battery is failing.  3WARE has a diagnostic program that lets you look at the controller's event log .. what does that reveal?  (Note, events are volatile, so don't power cycle the system until you read events).  

    Author Comment

    "3WARE has a diagnostic program that lets you look at the controller's event log .. what does that reveal?"

    I wish I could tell.  There doesn't seem to be any actual software available for this card (9550SX-8LP).  However, it does appear that the port is bad from what I can tell.  I have a 'spare' volume on the controller I'll use in its place.


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