[antiRepublicrat]

No disk flipping, no fuss. I back up a lot more frequently now that I have this in place.

If you're going to back up hard drive to hard drive, consider just using RAID 1 (mirroring). Most modern motherboards have RAID 1 built in. If the hard drive dies, a perfect copy is always right there and you won't miss a bit of work (until you get a replacement drive and rebuild the array).

[LibKill]

I do use a mirrored RAID array. However, I back up the primary once a week to an external hard drive.

The reason I do this is that in a mirrored array, anything that is written is written to both drives at once. If a newly installed program trashes the OS, both drives won't boot.

I actually had that happen once.

Anyway, counting the external backup, my main computer has 3 hard drives. :)