Migrating Server Storage to SSDs: Analysis of Tradeoffs

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Executive Summary

Recently, flash-based Solid-State Drives (SSDs) have become standard options for laptop and desktop storage, but their impact on enterprise server storage has not been studied. Provisioning server storage is challenging. It requires optimizing for the performance, capacity, power and reliability needs of the expected workload, all while minimizing financial costs. This paper analyzes a number of workload traces from servers in both large and small data centers, to decide whether and how SSDs should be used to support each. The paper analyzes both complete replacement of disks by SSDs, as well as use of SSDs as an intermediate tier between disks and DRAM.

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