We propose a scheme for improving write performance in traditional mirrored disks using write caching. The technique uses write-only disk caches to improve write performance; a write through to disk for cached data and a write twice scheme to provide a highly fault tolerant system. The scheme is simple and can be readily integrated into existing systems with only low-level software redesign. Unlike some mirroring techniques, this technique maintains the semantics of traditional mirroring, allowing a disk to disk copy during recovery while improving write efficiency by almost a factor of 2 over traditional mirrors.
CITATION STYLE
Orji, C. U., Weiss, M. A., & Solworth, J. A. (1993). Improved traditional mirror. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 730 LNCS, pp. 329–344). Springer Verlag. https://doi.org/10.1007/3-540-57301-1_22
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