After around 4 years, I've finally replaced my G5 with an 8-core 2.66 with 12GB RAM. This makes me very happy, albeit poor. Having spent that much on a computer, added to the fact that I'm now starting to get more music/audio freelance work, means I'm keen to get a decent backup system going. I aim eventually to get a 1tb external drive and use time machine to backup my samples drive, but what do you reckon would be the best option for the system drive? Right now, I have a 640gb system drive, and a 640gb blank internal hd, waiting to be raided or setup as a time machine backup. I'm not particularly concerned about user error. I haven't really made any errors in terms of deleting important stuff that I shouldn't have, but I have experienced a couple of catastrophic hard disc failures. This makes me lean towards mirrored raid, for the peace of mind of having an instant recovery if my system drive dies. But would software mirrored raid be reliable? And would it introduce performance issues to a system where hard disk speed is important? Excuse my ignorance - it'd be nice to hear some opinions As an aside, someone on the LogicProHelp forums has done something bonkers with Raid and partitioning - maybe I could do something similar? "So, my 4 WD6400's look like this. HD1: - partition 1 (300GB) for boot - partition 2 (300GB) for nightly backups of HD2. - This gives me a high performance boot drive (100-120MB/sec across the entire partition) HD2: - partition 1 (300GB) for "work files" - partition 2 (300GB) for nightly backups of HD1. - This gives me a high performance work files drive where I keep all my project files (100-120MB/sec across the entire partition) HD 3/4: This one I take advantage of apples excellent soft RAID capabilities. I partition both drives with a 200GB first and 400GB second partition. Now - watch this. With the two 400GB partitions, i create mirrored RAID (which becomes a 400Gb logical drive). With the two 200GB partitions I create a striped RAID (which becomes a 400GB logical drive). Now I can simply back up the striped RAID to the mirrored RAID. Kind of like having a RAID 10 with only two drives. This gives me a SUPER performance drive for all my samples, loops, etc (about 180-200MB/sec across the entire 400GB logical drive!) Samples load very fast! "