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Stratus Computer Inc, Marlboro, Massachusetts yesterday extended its XA2000 Continuous Processing systems upwards to offer up to 40% more power for on-line transaction processing than in the previous high-end models, and also added a new release of its Virtual Operating System, VOS, enabling users of the XA2000 Models 110 to 140 to upgrade their systems on-line to the higher performance of the new Models 150 and 160. The new systems are created by simply adding more of the multi-68020-based processor boards, so the Model 150 includes five sets of duplexed processor boards, the Model 160 six. Any combination of up to 32 Stratus models can be connected using the StrataLink high-speed intermodule bus, for a system that can process hundreds of transactions per second. Stratus claims the 160 delivers up to 67 ET-1 transactions per second against 47 for the Model 140. The new release 7.0 release of VOS supp-orts up to 96Mb of duplexed main memory. It also supports the Kanji, Hiragana and Katakana character sets from Japan, and provides greater support for character sets from Western Europe. It adds a network con figurator to help in building and modifying the address database of all systems on a StrataNet network, and adds permanent virtual circuit support for X25 packet communications. A base Model 160 with VOS 7.0 and 32Mb duplexed memory is $750,000 and a similarly configured Model 150 is 675,000. First US deliveries are planned for the first quarter of 1988.

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