IBM's System z9 Enterprise Class server. Big, honkin' stuff with neon lighting. So what's “enterprise class?” The z9 weighs in at more than 4,400lbs. and comes with up to 512GB of memory, 60 LPARs (each with 64-bit central memory) and SHA-256 bit encryption for security. Yet for all its bulk, IBM designed it to look futuristically angular and slick.