Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Patent
1996-06-10
1998-10-27
Swann, Tod R.
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
711161, 711156, 711118, 711111, 711113, 711100, G06F 1214
Patent
active
058290460
ABSTRACT:
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.
REFERENCES:
patent: 5208665 (1993-05-01), McCalley et al.
patent: 5218695 (1993-06-01), Noveck et al.
patent: 5276860 (1994-01-01), Fortier et al.
patent: 5276867 (1994-01-01), Kenley et al.
patent: 5367698 (1994-11-01), Webber et al.
patent: 5371532 (1994-12-01), Gelman et al.
patent: 5442749 (1995-08-01), Northcutt et al.
patent: 5442771 (1995-08-01), Filepp et al.
patent: 5504873 (1996-04-01), Martin et al.
patent: 5519435 (1996-05-01), Anderson
patent: 5528513 (1996-06-01), Vaitzblit et al.
patent: 5550982 (1996-08-01), Long et al.
patent: 5551025 (1996-08-01), O'Reilley et al.
patent: 5574662 (1996-11-01), Windrem et al.
patent: 5586264 (1996-12-01), Bleknap et al.
patent: 5590320 (1996-12-01), Maxey
patent: 5594910 (1997-01-01), Filepp et al.
patent: 5603058 (1997-02-01), Belknap et al.
patent: 5606359 (1997-02-01), Youden et al.
patent: 5625405 (1997-04-01), DuLac et al.
patent: 5633810 (1997-05-01), Mandal et al.
patent: 5633999 (1997-05-01), Clowes et al.
Rangen PV, Vin HM, "Designing file systems for digital audio and video," Proceedings of the 13th ACM Symposium on Operating Systems Principles, Monterey, Calif., 1991, pp. 81-94.
Vin HM, Rangan PV, (1993), "Designing a multiuser HDTV storage service," IEEE Journal on Selected Areas in Communication, vol. 11, No. 1, Jan. 1993, pp. 153-164.
Anderson DP, Osawa Y, Govindan R, "A file system for continuous media," ACM Transactions on Computer Systems, vol. 10., No. 4, Nov. 1992, pp. 311-337.
Federighi C, "A Distributed Hierarchical Storage Manager for a Video-on-Demand System," Department of Electrical Engr. and Computer Science, University of California, Berkeley, California, Dec. 1993.
Hastings R, The shark continuous-media file server. Proceedings IEEE COMPCON 93, San Francisco, Calif., 1993, pp. 12-15.
Little TD, Rhanger G, Folz RJ, Gibbon JF, Reeve FW, Schelleng DH, Venkatesh D, "A digital on-demand video service supporting content based queries," Proceedings of ACM Multimedia 93, Anaheim, Calif., Aug. 1-6, 1993, pp. 427-436.
Lougher, P, Sheperd, D. "The design of a storage server for continuous media," The Computer Journal, vol. 36, No. 1, 1993, pp. 32-42.
Rangan PV, Vin HM, Ramanathan S, "Designing an on-demand multimedia service," IEEE Communications Magazine, vol. 30, No. 7, Jul. 1992, pp. 56-64.
Sincoskie, WD, "System architecture for a large scale video on demand service," Computer Networks and ISDN Systems, vol. 22, No. 2, Sep. 1991, pp. 155-162.
Tobagi FA, Pang J, "StarWorks (Trademark)--A video applications server," Proceedings, IEEE COMPCON 93, San Francisco, Calif., 1993, pp. 4-11.
Vaitzblit L, "The design and implementation of a high bandwidth file service for continuous media," Master's Thesis, Massachusetts Institute of Technology, Cambridge, Mass., Nov. 4, 1991.
Dunham Scott R.
Tzelnic Percy
EMC Corporation
Swann Tod R.
Tzeng Fred F.
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