New Hard Drive

Newegg.com - WESTERN DIGITAL WD1200JB Hard Drives
I'm getting this once they get some in stock.
I know I'm doing some sort of setup with my other 120GB HD eventually, but I'm not sure whether to use one/some/none/all of the following: RAID 0, RAID 1, LVM, EVMS, hardware RAID, etc.
So yeah, I was initally just going to do RAID 0, but now I'm having second thoughts.
Well whatever, but I'm going to put Gentoo (not sure stable or unstable) on the Krisa compy, and make that a dedicated file server with these disk drives. (and maybe also a DVD burner for local backup)