Brew/Koji‘s db is well over 100G, Bugzilla is ~11G so your puny 8.5G RT database fails to impress. 
BTW, for the record, Request Tracker is a slow and confusing beast. I’d _really_ like to put it out of my misery.
The Only 8.5G? by Matthew Schick, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License.
Ahhh..but how many dbservers are in that cluster?
I blame perl for RT being so cumbersome. But that’s just me