Fault-tolerant system builder, Tandem Computers Inc, Cupertino, California, is expanding its family of fault-tolerant Unix offerings with new additions to its Integrity FT series of MIPS Technologies Inc RISC-based systems – the first to use the 50MHz R4000SC RISC. Tandem has also teamed with MIPS parent Silicon Graphics Ins, and will be offering the Mountain View, California-based firm’s high-end R4400-based Challenge series of symmetric multiprocessors, which scale to 36 CPUs, as its Integrity NR Network Resource series, running Irix 5.x Unix. Tandem has pledged to add high-availability features to the systems. It will also market Indigo and Iris workstations under the Silicon Graphics brand name. NR servers are priced at from $22,000 – workstations go from $5,600. The new home-grown Integrity models are the CO-1450, which has been tailored for telephone company customers, and the CM-1450, aimed at other commercial applications. Both come with from 32Mb to 192Mb memory, a range of disk options starting at 4Gb, and are effectively R4000 upgrades to Tandem’s existing R3000A CO-1300 and CM-1300 machines and are priced at from $270,000. As with the rest of the Integrity line, fault-tolerance is achieved by replicating hardware system components in triplicate. Tandem has also added R3000A-based models to its low-end S series eliminating the S100 and S200 in the process. The S300 comes with 32Mb RAM as standard, while the S300E can be expanded to 128Mb – each is from $100,000. The new systems run Tandem’s NonStop-UX fault-tolerant version of Unix System V.4.
