after you unclaim the luns in vplex you have to tell the vplex to forget the luns. if you do not do that and unmask the devices from vplex it will throw errors saying it cannot find the luns and will call home. To avoid that do the following.  1. after you unclaim the luns in vplex run the below command to tell vplex to forget the luns. VPlexcli:/clusters/cluster-1/storage-elements/storage-volumes> forget --logical-unit-id VPD83T3:6006016097802d008496f500e242e111 --cluster cluster-1 2. unmask the luns from vplex   
We are migrating a lot of LUNs from HDS to EMC VNX\VMAXe systems. Everything goes smooth until we try to remove the old LUNs from VPLEX.   After the migrations have completed, we tear down the Volumes, Device, Extents, etc and Unclaim the Devices. As soon as we unmask the devices to VPLEX, we get a Call Home...  We rediscover the array and it shows that it's missing volumes (which were the ones we unmasked)...  We've asked for a proceedure to properly remove devices so VPLEX doesn't dial home and we would like to do this through the GUI - I like the visual confirmation that what I'm unclaiming and destroying is in fact unused - There is absolutely no room for the possibility of error.   What I do now as soon as I unmask (and get the call home) I run the following CLI command:  storage-volume forget   -i     Is there a way to "forget" LUNs from the GUI?  Just wondering what everyone else does?
Remove LUNs from VPLEX without Call Home Event