I'm running two hard drives in my G5 now, no problems.
At one point I was running 3 (the third was taped to the top of the ICE unit behind the DVD drive.
SZ87R6/i5 4560 stock/8GB 2333mhz/840 Evo 250GB/Seagate 2TB/ASUS 760GTX/Dell 2711
Rainbows lie in corded knots
While thunder wakes the sleeping crocs.