Storage

Self-Adjusting Two-Failure Tolerant Disk Arrays

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Executive Summary

While flash and Storage Class Memory (SCM) technologies stand to replace magnetic disk technology as the mainstay for high end applications, the sheer amount of data to be stored, the attractive cost-to-capacity ratios of disks, and the high streaming throughput in comparison with not only tape but also with high-end flash and SCM, give magnetic disk technology a continuing and important role in the storage hierarchy. This is true whether disks are relegated to tertiary storage roles or remain as the secondary storage technology behind flash/SCM-based caches.

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