Feline,
Anyone wanting to better understand RAID, I sent them to these two articles:
IDE RAID Comparison
and
Chunksize Optimization Guide
Remember RAID 1 only helps with Hardware Failure, and that is all.
From what I gather you want to do, this is what I would recommend:
- Put both your 80Gb WD Drives on RAID 0 so you can enjoy the boost in performance.
- Get a Western Digital 250GB USB 2.0/FireWire External Hard Drive, Model WDXC2500JBRNN $197.00 U.S.
- Get Acronis True Image 7.0
This way you do a complete backup (by making an Image of the Drive) of your Hard Drive to the External Drive every evening. Should your system crash do to corruption or a virus, you can restore one of the images that was not affected.
Take Care,
Richard