Firewire or USB 2.0?

I have my Drobo 2.0 16 tb (4.0 tb actual) plugged in to a Mac Mini via Firewire 800. What’s a better option between Firewire and USB 2?

Newbie and very happy Drobo user.

Bus-wise, Firewire 800 is faster than USB 2.0 - both in theoretical speed as well as practical-use speed.

The only exception I would make to using FW800 over USB 2.0 is if you have other Firewire devices connected to the bus, especially slower devices like cameras.

Great, thanks for the response. I only have my drobo on the bus. I used to have 3 external USB 2.0 drives that I replaced with the drobo, so I’m happy to have all my USB ports free again.