Be sure to add the LUN on the 4.x host first (and then do a "rescan for datastores" on the5.x host). If you add it on the 5.x host you must format it VMFS3 in order for the 4.x host to see the datastore.
Eric
Be sure to add the LUN on the 4.x host first (and then do a "rescan for datastores" on the5.x host). If you add it on the 5.x host you must format it VMFS3 in order for the 4.x host to see the datastore.
Eric