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Optimizing Power Consumption in Large Scale Storage Systems
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Data centers are the backend of a large number of services that are taken for granted today. Cornell University's Computer Science Department members examine a new solution to optimize power consumption in large scale storage systems. They argue that technological evolution has given the Log-Structured File System (LFS) new relevance as a natural power-saving opportunity for large-scale storage systems.
The Log-Structured File System was inspired by a need to optimize the latency of write-accesses. Ultimately, findings show that a new opportunity for saving power in large-scale storage systems is born. The solution is that log structured file systems write only to the log head; as a result, if read accesses are served by the cache, then write accesses touch only the log head disk, potentially permitting the power down of all other disks.