BillytheImpaler said:For those sort of tasks with limited resources I'd get a used P3 system, a RAID card, a tape drive, and a load of disks. I'd then set up RAID 1 across the disks and run periodic backups to tape, moving the tapes offsite in case of emergency.
You need not have high-end processing power as most any proc should be able to handle the load.
For an OS I recommend Debian highly. It's free, well-supported, and is relatively easy to use.