Unisys Corp has added a cache disk storage subsystem for its 1100 and 2200 mainframe computers: the M9740 offers 16Mb to 64Mb of cache memory, and disk capacity of 32Gb with functional redundancy for high availability; it comes standard with a dual control unit that supports four separate mainframe host interfaces and can be configured to handle up to eight host interfaces; it uses 9.5 disks with unformatted capacities of 1.98Gb, average seek time is 12.5mS and prices start at $275,707 for 16Mb of cache and 7.92Gb of disk, ships next month.
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