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Windows 2008 Cluster – Can’t move Disk from one Cluster to a new one ?

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Today I had faced a very interesting issue. I was in a position where I need to move the disks from a “old” cluster to a new one. After several troubleshooting steps I found out that the disks has a “active” PR-3 reservation which blocks the access to the disks. This is a expected behavior in a shared disk model which supports PR-3 SCSI commands.

The magic here is :

cluster node %nodename% /clearpr:DISKID

to remove the persistent reservation ;-)

More Details about “node cleanup” can be found here