Improving NAND Flash Based Disk Caches

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Provided by: University of Miami School of Business Administration
Topic: Storage
Format: PDF
Flash is a widely used storage device that provides high density and low power, appealing properties for general purpose computing. Today, its usual application is in portable special purpose devices such as MP3 players. In this paper, they examine its use in the server domain - a more general purpose environment. Aggressive process scaling and the use of multi-level cells continue to improve density ahead of Moore's Law predictions, making Flash even more attractive as a general purpose memory solution. Unfortunately, reliability limits the use of Flash. To seriously consider Flash in the server domain, architectural support must exist to address this concern. This paper first shows how Flash can be used in today's server platforms as a disk cache.
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