This is what RAID is all about. Keeping data without worrying too much about hardware failure. It works, eh? ;f
If you're happy with 80 Gig, then just get a replacement. The only reason I could think to get a larger set is if you wanted more space.
Sent from my rotary phone
"The way I see it as soon as a baby is born, he should be issued a banjo!"- Linus Van Pelt
UNIX - Not just for Vestal Virgins any more