Using eSata on external hard drive

Using eSata on external hard drive

"I have a Lacie D2 Quadra that I have been using through firewire 800. Mac pros at school have an eSata hookup, but my HD will not show up when I try to use it this way. I have assumed the drive is not hotswappable and turned the comp on after plugging in the drive.
Am I missing something about eSata here?"