Ah, I was calling them XServe and XRaid But it seems that Apple calls them 'XServe' and 'XServe Raid' These are two different boxes. --------------------------------------------------------------------------- The XServe takes max of 4 disks, raid 0,1 or unraided. and is a server. Software raid only - not hardware raid raid does not do auto-rebuild. 1-U unit --------------------------------------------------------------------------- The XServe Raid, is a raid array - and is not a server. hold up to 14 disks, does raid 0,1,5,10,50. Raid 0,1,5 as hardware raid, 10,50 as software raid. Disks are hot swappable. 4-U unit Hardware raid should be able to do auto rebuild. --------------------------------------------------------------------------- Look at the pics of the web site - they are different http://www.apple.com/xserve/ http://www.apple.com/xserve/raid/ Optimally, you would connect to two together. - Hope that's clearer. -- Peter -- Peter Clarke, Harrow Campus Computing Services, Technical Support. (Projects) Ext 4685; Room L1.07; Learning Resource Centre.