Data storage system for providing redundant copies of data on different disk drives
June 15, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3581286 3725864 System for transferring data between central units and controlled units Duplicated memory system having status indication Peripheral subsystem initialization method and apparatus Controlling asynchronously operating peripherals Multiple copy data mechanism on synchronous disk drives System and method for using cached data at a local node after re-opening a file at a remote node in a distributed networking environment Local cache structure for maintaining updated file characteristics in a file sharing system Multiprocessor system architecture with high availability Inventors
AssigneeApplicationNo. 538911 filed on 06/15/1990US Classes:714/6Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data)ExaminersPrimary: Atkinson, Charles E.Attorney, Agent or FirmForeign Patent References
International ClassesG06F 011/20G06F 013/00 AbstractA disk storage system that writes multiple copies of records directed to user-specified volumes. A plurality of spaced apart control units interconnected by direct data links and a corresponding plurality of sets of recording means communicate over the direct data links when a write request is received by one control unit to cause one volume in each set of recording means to write a copy of the received record.Other References
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