Data drive missing in SBS2003

Posted on 2009-07-12
Medium Priority
Last Modified: 2012-05-07
After having to run a chkdsk /f on a RAID 5 volume that makes up the D: drive on an SBS 2003 server, I rebooted and the D: drive (C: is the system drive it's ok) is simply missing from windows explorer. It's like Windows has no reference to the drive at all.

The Raid manager shows the volume and it is optimal.  All drives show fine on boot up as well. It's like PHYSICALLY the drives are fine but LOGICALLY windows doesn't see the drive.

Any ideas? Thanks,
Question by:dgrenda
LVL 30

Expert Comment

by:Britt Thompson
ID: 24835144
Right click on My Computer and go to Manage > Find Disk Management and verify that the volume still has a drive letter assigned to it.

Author Comment

ID: 24835219
Disk management says it is dynamic and offline. But it does see it. I tried to reactivate it and got events:

Disk group LioxxxverDg0: Errors in some configuration copies:
Disk Harddisk1, copy 1: Block 320: Invalid magic number in the configuration copy


INTERNAL Error - The disk group contains no valid configuration copies  (C10000B6).
LVL 76

Assisted Solution

by:Alan Hardisty
Alan Hardisty earned 400 total points
ID: 24835305
Extract from http://www.quetek.com/RAID_mistakes.htm
Chkdsk being run on one of the disksChkdsk is a Windows utility that uses simple algorithms to recover data from a corrupt disk. Chkdsk can be started by the user or automatically by Windows if it detects disk corruption at boot time. (Windows will ask for confirmation before starting chkdsk but will start it anyway if no response is received after a number of seconds.) Chkdsk is not RAID-aware. Its algorithms only work in the simplest cases. In general, it must be avoided.

If chkdsk attempts to repair one or more member disks, the RAID data patterns will be destroyed, usually beyond recovery.  
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LVL 30

Expert Comment

by:Britt Thompson
ID: 24835313
The dynamic disk is where you ran into trouble...since you have a hardware RAID the dynamic disk LDM database was probably blown up when you ran chkdsk.

You'll most likely have to do a data recovery on the existing disk and reformat it. Make sure you keep the hardware RAID as a basic disk or GPT if it's over 2TB. http://www.ontrackdatarecovery.com/file-recovery-software/

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Accepted Solution

Britt Thompson earned 1200 total points
ID: 24835339
LVL 47

Assisted Solution

noxcho earned 400 total points
ID: 24835344
Do you have up to date backup of the data? If yes, then restore from it.

Author Closing Comment

ID: 31602597
Thank you all. The chkdsk pulled 3+ Gig of files and that doomed the drive. I will probably just convert the drive and reformat it and resotre.

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