Dynamically reconfigurable data storage system with storage system controllers selectively operable as channel adapters on storage device adapters
Patent 5269011 Issued on December 7, 1993. Estimated Expiration Date: 
December 7, 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.
December 7, 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 ReferencesConfiguration and control unit for a heterogeneous multi-system Virtual storage system and method Method and apparatus for peripheral data handling hierarchies Peripheral data storage having access controls with error recovery Diagnostic system in a data processing system Maintaining duplex-paired storage devices during gap processing using of a dual copy function Patent #: 5051887 InventorsAssigneeApplicationNo. 587247 filed on 09/24/1990US Classes:710/100, INTRASYSTEM CONNECTION (E.G., BUS AND BUS TRANSACTION PROCESSING)703/24Of peripheral deviceExaminersPrimary: Dixon, Joseph L.Assistant: Asta, Frank J. Attorney, Agent or FirmInternational ClassG06F 013/00AbstractA dynamically reconfigurable data storage system includes a plurality of storage system controllers, each of which is selectively operable at any given time as one of a channel adapter and a storage device adapter as established by commands received by each of the controllers. At least one semiconductor memory is coupled to the storage system controllers. Additionally, a data storage system director issues commands to each of the storage system controllers for establishing a first quantity of the system controllers as channel adapters, for transmitting and receiving at least data and commands to and from one or more host computers over a plurality of data communication channels. The data storage system director also establishes a second quantity of the storage system controllers as storage device adapters, for cotrolling data transfer to and from a plurality of data storage devices.Other References
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