i have an unused internal (either 3 1/2 or 5 1/4 [with bay converter] bay) IOMEGA JAZ 2GB drive it uses a SCSI interface. it's fast enough to be used as a hard disk, but it's removable and a good backup solution. i will even toss in a SCSI card (Adaptec 2940 PCI) if needed. please make an offer if interested (the disks alone are about $80 a piece)
this would be a great way to add a backup solution to any computer.
just let me know if you are interested, trades or cash welcome