The HP 9000 is a line of UNIX-based business servers from Hewlett-Packard (HP) with server models that span enterprise applications from the "entry-level" (branch or department-level computers, Web hosting servers, and so forth) through the midrange with needs for handling advanced enterprise resource planning (ERP) and analytical customer resource management (CRM) up to its high-end servers for very computing-intensive applications. Within the entry-level, midrange, and high-end categories, a customer can choose one of several "classes" of server. In all cases, the operating system is HP-UX.
The HP 9000 uses HP's 8600 processor with PA-RISC architecture. At the high end, HP offers SuperDome, a product that consists of up to 64 HP 9000 processors that can do parallel processing. The customer can choose to use as many processors as are needed and is charged accordingly.
The HP 9000 represents HP's newest line of computer servers. Its well-known line of HP 3000 computers has also been updated as the HP e3000 and continue to support older applications as well as new ones.