I would think that we're not looking for "old" technology. Perhaps we should expand the criteria to include the venerable non-magnetic paper tape or the punch cards as well?
The most popular ones have been posted above. Most of the higher capacity units can also be found in a library format to expand the capacity even further.
Here's a list at least:
http://www.9to5computer.com/Tape-Drive-Comparison.htmYou may want to wiki each leading type to get the basic technicals on each:
http://en.wikipedia.org/wiki/Tape_driveYou can click on each type to get some specifics.
