275K --> 100K for IBM i / i5/OS / OS/400
It's a shame that so many organisations appear to be/have been moving away from IBM's AS/400 platform (in all of its various flavours).
The AS/400 is, by-and-large, the best box that IBM ever designed, its OS having been developed by a team specifically chosen for their "lack of exposure" to UNIX and other POSIX-like operating systems.
I would venture to say that in our relatively short history of computerdom, there have been few other boxes that "just work" after being removed from the shipping crate, moved into the server room, plugged in, and powered on.
Long live the 400!