05829046 is referenced by 364 patents and cites 25 patents.

A video file server includes an integrated cached disk array storage subsystem and a plurality of stream server computers linking the cached disk array to a data network for the transfer of video data streams. The video file server further includes a controller server for applying an admission control policy to client requests and assigning stream servers to service the client requests. The stream servers include a real-time scheduler for scheduling isochronous tasks, and supports at least one industry standard network file access protocol and one file access protocol for continuous media file access. The cached disk storage subsystem is responsive to video prefetch commands, and the data specified for a prefetch command for a process are retained in an allocated portion of the cache memory from the time that the cached disk storage subsystem has responded to the prefetch command to the time that the cached disk storage subsystem responds to a fetch command specifying the data for the process. The time between prefetching and fetching is selected based on available disk and cache resources. The video file server provides video-on-demand service by maintaining and dynamically allocating sliding windows of video data in the random access memories of the stream server computers. The video file server has a tape silo for providing network backup services, and data to be written to tape are prestaged in the cached disk storage subsystem.

Title
On-line tape backup using an integrated cached disk array
Application Number
8/661187
Publication Number
5829046
Application Date
June 10, 1996
Publication Date
October 27, 1998
Inventor
Scott R Dunham
Billerica
MA, US
Percy Tzelnic
Concord
MA, US
Agent
Arnold White & Durkee
Assignee
EMC Corporation
MA, US
IPC
H04N 7/14
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