It's amazing when a company sets a VERY low limit on a backup solution.
We got three servers here which costs about 2500 € (all of them together).
So I got problems argumenting that we shall spent 5000 € for a backup solution =)

I think I'll split the data in several groups and will backup each group twice a week.
So I can use a Quantum 160/320 GB drive which will cost about 1,2K € with 5 tapes.

We got a Raid-Mirror to prevent data loss because of Harddisk Crash and we even got
an external backup harddisk. Only reason why I want another backup solution is if
someone steals the PC or we got a fire in here.