How to modify older ML350 G5/G6 tower servers to accomodate 2tb+ hard drives

[serverjockey]

I've been trying to figure out how to modify some older ML350 G5/G6 tower servers that I'm working on for a school.  Right now they don't have any backoffice technology.  Unfortunately the servers I currently have don't have enough space for saving files or much of anything else other than running DNS, DHCP, etc   Once upon a time long ago I could have sworn I came across an article either on this site or somewhere on the web that was talking about this but i don't remember the solution.  Has anyone had "hands-on" experience with this?  Or if anyone has any links to point me in the right direction would be much appreciated.  Thanks in advance.