I have an A1009 Xserve RAID and an Xserve 3,1 running OS X Server 10.6. Everything works fine and it doesn't support any services apart from administering the RAID. Just part of a home lab and unnecessary vintage Mac collection. I installed El Capitan on another disk with no problems but I could not get the RAID Admin jar to open. I installed a Java update per another thread but still no success opening the Admin utility. Perhaps the 1.5.1 RAID Admin utility won't run on 10.11? Has anyone used the RAID Admin utility on an OS X version subsequent to 10.6?