- Tiger
Shark
File System
Real-time
delivery of hundreds of video streams.
-
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 PFS is the product version of Tiger
Shark file system, developed at the IBM Almaden Research Center. Tiger
Shark is designed to support interactive multimedia, particularly
large-scale systems such as interactive television (ITV), on machines
ranging from small desktop computers to scalable cluster machines
such as the IBM RS/6000 SP.
Tiger Shark incorporates numerous features that enable
it to support scalable, high-quality delivery of multimedia content, including:
- Quality of Service (QOS) -
Tiger Shark manages system resources to assure adequate bandwidth is available for each
multimedia stream. Disk I/O is scheduled to assure smooth delivery.
- Shared Disk Model - Tiger Shark allows multiple
streaming servers to share content on switch-attached disks. On the SP, switch-attached
disks are implemented using the Virtual Shared Disk (VSD) subsystem. Tiger Shark stripes
files across tens or even hundreds of shared disks for load balancing and high throughput.
- High Availability -
Tiger Shark uses journalling to allow it to recover from node failure, and supports
block-level replication or (through VSD) dual-attached disks to recover from disk failure.
Technology Transfer
Tiger Shark has been deployed in
video on demand and ITV trials at Bell Atlantic, Hong Kong Telecom, Tokyo Metropolitan
Government, and others. Tiger Shark is the file system in the IBM DB2 Digital Library Videocharger video server.
Publications and
presentations
- Roger Haskin, Tiger Shark - a scalable file system for multimedia
(308KB Acrobat PDF file), IBM Journal of Research and Development,
Vol. 42 No. 2, March 1998, pp. 185-197.
- Roger Haskin, The Tiger Shark File System (491KB
zip file), PowerPoint presentation describing Tiger Shark.
- Roger Haskin and Frank Schmuck, The Tiger Shark File System (159KB
Acrobat PDF file), Proceedings of IEEE 1996 Spring COMPCON, Santa Clara, CA, Feb.
1996.
- Roger Haskin and Frank Stein, A System for the Delivery of Interactive Television
Programming (139KB Acrobat PDF file), Proceedings of IEEE
1995 Spring COMPCON, San Francisco, CA, Mar. 1995, pp. 209-214.
- Roger Haskin, The Shark Continuous Media File Server (44.4KB Acrobat PDF file), Proceedings of IEEE 1993 Spring COMPCON, San
Francisco, CA, Feb. 1993, pp. 12-17.
Project Members: Roger Haskin
(manager), Tom Engelsiepen, Marc Eshel, Carol Hartman, Dan McNabb, Mike Roberts,
Wayne Sawdon, Frank Schmuck, Jim Wyllie
Contact:
Roger Haskin (408) 927-1843
roger@almaden.ibm.com
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