Thinly provisioned flash cache with shared storage pool
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United States of America Patent
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Aug 30, 2016
Grant Date -
Dec 3, 2015
app pub date -
Aug 11, 2015
filing date -
Jan 22, 2013
priority date (Note) -
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Abstract
For data processing in a computing storage environment by a processor device, the computing storage environment incorporating at least high-speed and lower-speed caches, and managed tiered levels of storage, a Solid State Device (SSD) tier is variably shared between the lower-speed cache and the managed tiered levels of storage such that the managed tiered levels of storage are operational on large data segments, and the lower-speed cache is allocated with the large data segments, yet operates with data segments of a smaller size than the large data segments and within the large data segments, where if selected data segments are cached in the lower-speed cache and are determined to become uniformly hot, the selected group from the lower-speed cache are migrated to the SSD tier.
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