Once you go past the 45 drive JBOD (which costs $2000 give or take) the price per slot starts to go up quickly ... the last quote we had for the supermicro 90 drive JBOD was $9000.<p>So if you are optimizing for rackspace, it might make sense, but if you&#x27;re keeping costs down, the 45 drive chassis is the best bet.