Improving Storage System Availability with D-GRAID (2004)
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| Venue: | In Proceedings of the 3rd USENIX Symposium on File and Storage Technologies (FAST ’04 |
| Citations: | 57 - 13 self |
BibTeX
@INPROCEEDINGS{Sivathanu04improvingstorage,
author = {Muthian Sivathanu and Vijayan Prabhakaran and Andrea C. Arpaci-dusseau and Remzi H. Arpaci-dusseau},
title = {Improving Storage System Availability with D-GRAID},
booktitle = {In Proceedings of the 3rd USENIX Symposium on File and Storage Technologies (FAST ’04},
year = {2004},
pages = {15--30}
}
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Abstract
We present the design, implementation, and evaluation of D-GRAID, a gracefully-degrading and quickly-recovering RAID storage array. D-GRAID ensures that most files within the file system remain available even when an unexpectedly high number of faults occur. D-GRAID also recovers from failures quickly, restoring only live file system data to a hot spare. Both graceful degradation and live-block recovery are implemented in a prototype SCSIbased storage system underneath unmodified file systems, demonstrating that powerful "file-system like" functionality can be implemented behind a narrow block-based interface.
