Microsoft SyncToy

I recently installed a pair of 2T hard drives in my main desktop computer. Plenty of space now. I really don't want to lose my files (again) due to a hard drive crash, so I tried to set them up as a mirrored pair. First I found out that WinXP doesn't support RAID-1 (the last thing I need is a 4T partition that's not being backed up!). No problem, I thought. My motherboard supports SATA RAID. But I couldn't get NVidia's software to work. So I figured I'd just do periodic backups from one drive to the other. This quickly turned into a pain, since there was no simple way to do incremental backups.

I figured there might be some open source app that would do incremental backups between drives, but I worried that it would be flakey, and the last thing I need is unreliable backups. However, I just discovered Microsoft SyncToy that seems to do exactly what I want, although I still have to do manual backups. I'm still nervous about doing backups with a "Toy" but I'm willing to give it a go; I'm going to give Microsoft the benefit of the doubt here. I have it set to "Echo" changes from the main drive to the backup, so edits, renames, and deletions are all pushed to the backup drive. I can breath easier already.