Ok this might sound to be a silly task, but when you need to perform it, you might get frustrated. Actually several times we had to move or reassign disks to a different node/filer in our IBM Nseries Cluster. If you are not aware of the IBM Nseries then all I need to tell you its a Netapp box oemed as IBM. So again this post apply to N-Series as well Netapp clustered filers.