Disk Management shows 'unallocated' and 'online' basic disk on a 4 node Windows 2003 Cluster - Is this disk reclaimable?

Question

We've a 4 node Windows 2003 File Share Cluster. I logged onto one of the nodes and found there are a lot of SAN connected disks that show 'Unallocated' in Disk Management as below,
Please could someone advice if these disks are unused? and reclaimable? From what I heard from Adminstrator is that, its the default behavior of Cluster and will be in use by a different node on the same cluster. If so, is there an easier way to identify
which nodes are using these disks? since it appears as though these disks are mapped to server but not being used, many thanks.

Answer 1

As expected.
Things a bit clearer in current versions of Windows Server, but back in the 2003 days, that was how the shared disk was shown on the nodes that did not own the disk.  If you go to each node in the cluster and look at the same thing in each node, you
will have the same number of disks.  On the node that owns the disk, you will see it represented as you would expect.  On the nodes that do not own the disk, you will see it displayed as you have shown in your screen shot.
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