Efficient failure recovery in multi-disk multimedia servers

In this paper, we present a novel disk failure recovery method that utilizes the 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. We also present a disk...

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Bibliographic Details
Main Authors: Vin, H.M., Shenoy, P.J., Rao, S.
Format: Conference Proceeding
Language:English
Subjects:
Encoding
Error correction codes
Failure analysis
Fault tolerance
Fault tolerant systems
Image reconstruction
Network servers
Redundancy
Streaming media
Telephony
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Summary:In this paper, we present a novel disk failure recovery method that utilizes the 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. 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.< >
DOI:10.1109/FTCS.1995.467000