We have a Celerra NX4, with new Unisphere, Dart 6 installed.  There are a few iSCSI LUNs on the Celerra that are no longer being used by any iSCSI clients, to the best of my knowledge.  LUN masks have been removed from them, etc.

However, I can't delete them.  DART insists that they are still in use.

What diagnostics can I run to determine what servers are still logged in and mapping those iSCSI volumes?  And, how can I force the Celerra to delete them if they are in fact not being used?

Thanks,

Eric