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Incorrect Function when clicking on disk after breaking mirror

Posted on 2014-07-30
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Last Modified: 2014-07-31
I have a Windows 2003 Server with a software mirrored SCSI data partition. One of the disks has bad blocks and is failing. I broke the mirror to create two individual disks. I now have the two disks, the one with the bad blocks retained the original drive letter and continues to work as normal. The other received a new drive letter and gives me "incorrect function" when trying to access it via Explorer. The drive shows online and and healthy in Disk Management. My hope was I would end up with two disks, one that had all my data on it that worked, and another with all my data on it that had the bad blocks.

Is there a way to revive this drive? Thanks for your help!
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Question by:CanOfWorms
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by:andyalder
ID: 40229648
Weren't you going to put it on a separate PC to try data recovery on it?
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Author Comment

by:CanOfWorms
ID: 40229805
Yes I was! That was before I found out the disks in question were SCSI. The Server OS reports the disks as SCSI, however upon examination of the physical disk it is in fact SATA.

I have now tested the disk in another PC and it is operational. I am backing it up now. However I would like to be able to re-insert the disk into the server and use the drive. At this point I will most likely wait for the backup to complete, boot up the server and remove any reference to the disk in question. Down the server and re-attached the disk and import it as a foreign disk. Hopefully that will work and save me from restoring from the backup.
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andyalder earned 500 total points
ID: 40230045
Not at all sure you can import a foreign disk that was once part of a mirror, if this is the good one you can take the other one out of the server and use this one, then introduce a new disk and create a new mirror. There's no "recombine mirror" command AFAIK, and you have mounted the disk so it's out of sync now anyway. http://support.microsoft.com/kb/816307 gives more info (Veritas documentation has more since they invented dynamic disks but I can't find the doc).

If you wipe this one completely you can re-use it with the other disk but the disk signature and LVM database has to be wiped because the other disk has that signature recorded in its own logical volume manager database. Using diskpart.exe clean disk command is the best way to wipe the metadata off it, when it is reinserted into a machine disk manager will then ask to write a new signature to it since "clean disk" wipes the old one out plus any partition information.
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Author Comment

by:CanOfWorms
ID: 40230224
This is great info. Thank you. I will be putting it to use tomorrow. I will let you know how it goes.
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Author Closing Comment

by:CanOfWorms
ID: 40232458
I didn't use Diskpart as it made me nervous. I did remove the orphaned disks via Disk Management, installed the disk, and then imported foreign disk with success! I lost all security and shares but data is intact and that was the goal. Thanks for the assistance.
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