05948062 is referenced by 241 patents and cites 69 patents.

For network file access, a plurality of data mover computers are linked to a cached disk array. Read-write files stored in the cached disk array are accessible to network clients through more than one of the data mover computers so that the data mover computers are not a bottleneck to file access. The cached disk array stores a network file directory including file locking information, and the data mover computers each have file system software that accesses the network file directory for shared read-write file access. The data mover computers perform the file system tasks such as managing the file directory for mapping of file names to logical blocks and for locking and unlocking of the files in order to minimize loading on the cached disk array. Therefore, the network file server need not use any particular one of the data mover computers to serve as a control point for read-write file access. Instead, file system software for managing the file directory is replicated in each data mover computer. The cached disk array recognizes logical block addresses, and the cached disk array has a limited internal locking facility ensuring that reading or writing to a logical block is an atomic operation. Preferably the data mover computers are commodity personal computers.

Title
Network file server using a cached disk array storing a network file directory including file locking information and data mover computers each having file system software for shared read-write file access
Application Number
661187
Publication Number
5948062
Application Date
November 13, 1996
Publication Date
September 7, 1999
Inventor
Uday Gupta
Westford
MA, US
Dennis P J Ting
Groton
MA, US
Uresh K Vahalia
Newton
MA, US
Percy Tzelnic
Concord
MA, US
Agent
Arnold White & Durkee
Assignee
EMC Corporation
MA, US
IPC
H04N 7/14
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