Quick question regarding the title of the post: I'd like to know if it's possible, or even advisable to run two seperate software RAID 1 volumes in one Mac Pro? Longer question if you have some time on your hands The company I work for are buying a new file server and backup system and I'm looking into the best way to utilise the equipment that is being suggested we go with. We are looking at a Mac Pro Server and my idea is to use one of the disks that comes with the Mac for the boot drive, use two 2TB enterprise class drives in a RAID 1 volume for our files and a fourth 2TB disk for a Time Machine backup. This is not the complete backup solution we are looking at. I just want to make sure we are utilising the server in the best way. What we definitely want is some protection for the Time Machine archive which prompted me to ask the question in the title. Would it be a good idea to to install another drive in the spare optical bay and have Time Machine backing up to a RAID 1 volume? Or would a better idea be to use that fifth drive to do a scheduled clone of the Time Machine volume? Or non of the above? I'd really appreciate any ideas on how we could go with this. Cheers.