>>> You can turn on write back caching if you have a UPS as well >>> (provided your UPS is wired into your system for a graceful shutdown) >>> >> >> Hopefully you have a redundant PS unit. Having a UPS is not going to >> help if your PS fails. >> >> > > redundant power supplies connected to redundant UPS's. I've seen more > UPS failures than I've ever had failed PSUs on proper server grade hardware. This might be getting a bit elaborate for a desktop machine. I really want RAID because I'm tired every couple years of hard drive crashes and having to start from scratch and spending a week setting up new drives and getting my design software back on line and trying to recover data. What do you think of alternative back up systems, such as a tape backup with bare metal restore software? I'd go that route instead if I could fine a solution which would allow me to restore to different hardware, i.e. if my motherboard dies and I need to buy a different brand or model MB. I know Storix back up software has this capability - I use storix on my Linux server with RAID 1. @ home I have one Linux and one Windows desktop machine. _________________________________________________________________ Connect and share in new ways with Windows Live. http://www.windowslive.com/share.html?ocid=TXT_TAGHM_Wave2_sharelife_012008