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Failure Recovery Algorithms for Multi-Disk Multimedia Servers
| Content Provider | Semantic Scholar |
|---|---|
| Author | Shenoy, Prashant J. Vin, Harrick M. |
| Copyright Year | 1996 |
| Abstract | In this paper, we present two novel disk failure recovery methods that utilize the inherent characteristics of video streams for efficient failure recovery. Whereas the first method exploits the sequential nature of video playback to reduce the overhead of online failure recovery, the second method exploits inherent redundancy in video streams (rather than error-correcting codes) to ensure that the user-invoked on-the-fly failure recovery process does not impose any additional load on the disk array. For the latter approach, we present failure recovery schemes for the JPEG and MPEG compression algorithms. We also present a disk array architecture that enhances the scalability of multimedia servers by: (1) integrating the recovery process with the decompression of video streams, and thereby distributing the reconstruction process across the clients; and (2) supporting graceful degradation in the quality of recovered images with increase in the number of disk failures. We present analytical and experimental results to show that both schemes significantly reduce the failure recovery overhead on a multimedia server. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.cs.utexas.edu/ftp/pub/techreports/tr96-06.ps.gz |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
