File server having snapshot application data groups
September 2, 2012. 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 ReferencesDatabase management system for controlling concurrent access to a database Logical track write scheduling system for a parallel disk drive array data storage subsystem Multilevel, hierarchical, dynamically mapped data storage subsystem Deleted data file space release system for a dynamically mapped virtual data storage subsystem Incremental disk backup system for a dynamically mapped data storage subsystem Method and apparatus for updating application databases used in a distributed transaction processing environment Phantom duplex copy group apparatus for a disk drive array data storge subsystem Detection of deletion of stored data by concurrently executing processes in a multiprocessing data processing system Version management system using pointers shared by a plurality of versions for indicating active lines of a version Dynamic, finite versioning for concurrent transaction and query processing Patent #: 5287496 Inventors
AssigneeApplicationNo. 939312 filed on 09/02/1992US Classes:707/204, Archiving or backup707/205, File allocation711/113, Caching711/114Arrayed (e.g., RAIDs)ExaminersPrimary: Black, Thomas G.Assistant: Pham, Cuan Attorney, Agent or FirmInternational ClassG06F 015/40AbstractThis file server system appears to the host computer to be a plurality of data storage devices which are directly addressable by the host computer using the native data management and access structures of the host computer. The file server however is an intelligent data storage subsystem that defines, manages and accesses synchronized sets of data and maintains these synchronized sets of data external from the host computer system's data management facilities in a manner that is completely transparent to the host computer. This is accomplished by the use of the snapshot application data group that extends the traditional sequential data set processing concept of generation data groups. | |
