A multiuser Unix workstation manufactured by IBM that runs the AIX operating system. Many University Unix accounts are provided on RS/6000s. (See Blue cluster.)

IBM’s principal challenger in the Unix workstation and mid-range market, which finally emerged in February 1990 after a long, difficult, and delayed birth. The initial IBM posture was that the box was to be sold into the engineering and scientific market, but subsequently it turned into a generic Unix machine for all markets. October 1994 symmetric multiprocessing versions were announced. Replaced by the eserver pSeries October 3, 2000, which also absorbed the NUMA-Q acquired through an IBM merger with Stratus. Runs IBM’s Unix derivative: AIX 1. See Pegasus

(RISC System/6000) An IBM family of RISC-based workstations and powerful servers using IBM's PowerPC processors.