Reclaim disk space

I have a windows 2008 server that I would like to recover some disk space it has allocated.
The server is running on a VM and running MSQL. The database at one time was running all on the “C” drive (disk 0).   I have moved the DB to different disk (disk 1 and disk 2) in doing this I now have Disk 0 with 727 GB of unallocated disk space and another 500 GB that I can reclaim from the active partition. How do I remove the unallocated disk space from Disk 0?
This is running on a SAN as well.
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JaysonJacksonAsked:
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Lieven EmbrechtsSenior IT ConsultantCommented:
Best option is to create a NEW volume, and migrate the data to the new volume, and then delete the old volume.

You didn't describe your san. is it iscsi ? with direct native iSCSI mounted volumes this can be challenging  If you are using a virtual machine (with virtual disks) you can reclaim storage by creating a new VMFS datastore, using sdelete to zero out unused space (within the Windows OS), then performing a storage migration and choosing "thin" provisioning on the virtual disk. While still requiring a new (VMFS) volume, the virtualized disk can be left intact avoiding any reconfiguration within the Windows server itself.
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JaysonJacksonAuthor Commented:
thank you.. I just did this in a test environment and it seemed to work.  I have ISCSI disk.   Thanks again.
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Windows Server 2008

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