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DPM 2007 - virtual disk service errors after expanding storage pool

Posted on 2008-10-28
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Last Modified: 2011-09-27
Allocate Replica For E:\ failed:
Error 360: The operation failed due to a virtual disk service error
Error details: Unknown error (0x80042515)
Recommended action: Retry the operation.

I'm getting this error when I try to add a volume to a protection group or when I try to allocate additional space to an existing recovery point volume.  A little history might help solve this:

This problem began when I reconfigured the RAID 5 array that makes up the DPM storage pool volume.  The storage pool was originally made up of 3x750gb SATA drives.  It was not large enough for all the data we need to protect so I added a 4th 750gb SATA drive to the system and used the Dell Open Manage Server Administrator to reconfigure the array.  DPM recognized the larger array and now shows the full 2094.37gb.  However, it does not seem to be able to utilize the additional space.  It is showing 698.24gb Unallocated spce (33%) which corresponds almost exactly to the actual size of one of the 750gb drives.

My question is:  How can I get DPM to use the unallocated space?
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Question by:global-works
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Not wanting to submit a support case to Microsoft, I solved this by deleting and then recreating and initializing my virtual disk from the BIOS level RAID configuration utility and then uninstalling and re-installing DPM 2007.  

I was getting another Virtual Disk Service error when trying to add the newly created virtual disk to DPM, but solved that by using Disk Management to first initialize the disk as GPT, then DPM converted it to Dynamic.  Now I've got my full 2TB, but at the expense of having to recreate all my protection groups and start my tape rotation from scratch.

DE
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