Having released 18 new models in the line just over a year ago, Siemens Nixdorf Informationsysteme AG unveiled a further 13 new systems in its 7.500 mainframe range at the CeBit exhibition in Hanover this month. Five new models in the new C50 system series replace the C30 and C40 office computers, providing a new entry path into the proprietary BS2000 world. The C range now comprises three uniprocessor models and two dyadic processor systems, a basic configuration consisting of the general processor, 16Mb main memory, service-console processor and input-output bus plus 2Gb disk – expandable to 16Gb with extension cabinet, a 155Mb cartridge system and a 3.5 floppy drive. It features integrated direct connections for additional disk peripherals, local and wide area network processors, cluster controllers and terminals. Type 2 block multiplexor channels for a maximum transfer rate of 4.5Mbps are also included. At the top end of the 7.500 scale, meanwhile, is the new H130 general-purpose series, comprising six systems. Compared with the H120 uniprocessor, Siemens claims the H130 offers a performance improvement of a factor of 1.5. The range comprises the H130-A uniprocessor system and the H130-P dual triadic system with duplex capability and six processors; then, between these two models, a dyadic, a triadic and a dual dyadic system. The H130’s main memory can be upgraded from 128Mb to 2Gb. The systems feature battery-buffered, non-volatile global memory with up to 8Gb and an access time of 100nS. The global memory is subdivided into two individual system units, providing a dual-recording capability. Up to 128 Type 2 channels in leading edge technology with maximum transfer rates of 3.0M-bytes-per-second and 4.5Mbps can be configured. The overall input-output processor data rate rates a peak 1Gbps. Channel units with four Type 2 channels can each be installed at distances of up to 6,000 feet from the mainframe, using optical waveguides, to support operation of remote peripherals. The proprietary H121 series, based on Fujitsu Ltd processors (CI No 1,814), has been extended from two to four models, the new additions offering doubled scalar and vector performance, aimed at scientific and engineering applications. The new models, coded the H121-G and H121-K, are claimed to offer a doubled peak vector performance of 1 GFLOPS. The maximum capacity of the system memory is now 8Gb. Up to 64 Type 2 channels can be operated concurrently at 3Mbps or 4.5Mbps. And Siemens Nixdorf has issued assurances that the current H121-F and H121-I models can be upgraded to the performance of the two new systems.
