Method and system for managing wear-level aware file systems
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United States of America Patent
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Mar 13, 2012
Grant Date -
Dec 31, 2009
app pub date -
Jun 30, 2008
filing date -
Jun 30, 2008
priority date (Note) -
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Abstract
A method for wear level-based allocation in a storage pool. The method includes receiving a first request to write a first data item in a storage pool, where the storage pool includes a number of physical locations associated with the storage devices, and where each of the storage devices includes metadata regarding a level of wear of the storage device. The method further includes determining a first target physical location selected from the plurality of physical locations by using a wear-level selection policy and a wear cost for each of the storage devices, where the wear cost is determined based on a type of the storage device. The method further includes allocating a first data block to the first target physical location writing the first data block to the first target physical locations, wherein the first data block comprises a first portion of the first data item.
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