HP 9000 server family overview
The HP 9000 server family features world-class computing with the HP PA-8900 processors and the proven, mission-critical-ready HP-UX 11i operating system. Now, new models make the HP 9000 family even stronger. These new mid-range and Superdome systems, with the HP sx2000 chipset, deliver even higher availability and performance—lowering your overall TCO—and protect your investment with in-box upgrades to HP Integrity servers.
source: www.hp.com
