You can try the following options.  1.If you are looking at monitoring any specific luns, you can create a regular device group and add the luns. Then select Snapshot tab and  select your dg group from the Device Group drop down.  Or  2.Select diagnostic tab and double click on the symetrix array serial number, select Device Group  tab and doule click on the ungrouped or the  device group, this  will bring all the luns from which you can select the luns for which you would like to view metrics for.  (You  may want to wait some time after you dclick  the unrgrouped as it takes some time to bring all the luns)  Hope this helps:)
I'm new to SPA.  I can drill into the storage group under Symm Masking but can I get to an individual lun? Thanks Tom
How do I drill down to an individual lun in SPA?