Again, quote and code have been removed.
Ironic, that smiley is called 'twisted'....anyway....
>>My understanding is LTO drives will write one generation back, and read two.
100% Accurate.
>>So I have been tasked with the job of finding everything I need to get data from an external hard drive to a LTO-1 tape. I have been doing alot of reading on the internet but information on LTO-1 is hard to come by and my expertise in this area is very limited.
That's because LTO-1 is about seven years old, end of life, and almost no longer available. Even an LTO-3 tape (400GB native) will cost you about $30 and an LTO-4 tape (800GB native) about the same. However, to read the LTO-1 tapes, you're upgrade stops at LTO-3. Even the purchase of an LTO-3 system now will cost you almost as much as an LTO-4.
>>what do I need in order to get information from an external hard drive to an LTO 1 tape?
Software and some hardware. The software needs to be able to write to tape and the hardware needs to support the system you're going to use it on, be it Windows, Mac, or Linux.
>>I obviously need a LTO-1 drive (what one is best, if I can find one?)

Good one! The key word in that whole sentence is "if". In all seriousness though, you won't find any new ones. If you find one that is advertised as "new", it's more than likely "newly refurbished" or even "grey" market (which isn't supported by anybody -- even if there were any companies that provided LTO-1 tape support any longer).
>>what kind of computer will I need and what kind of operating system will I need to support this older generation LTO drive?
Pick one. Seriously. There are many companies out there. For example,
TOLIS Group (which is the company that makes BRU -- what I use), sells
hardware bundles with everything you need for use on Mac OS X and Linux systems (I have an older system at home that runs Linux and uses
BRU Server Desktop for Linux). Don't have either? Well, do you have an PC you don't use anymore or can re-assign? Then install
Ubuntu Linux (probably the most user-friendly) and then use BRU on that machine to backup to the tape device.
Frankly, the choice is yours and when you decide what you want to use for an operating system, that will dictate the hardware and software that you can use.