Nonvolatile storage thresholding for ultra-SSD, SSD, and HDD drive intermix
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United States of America Patent
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Mar 29, 2016
Grant Date -
May 14, 2015
app pub date -
Nov 12, 2013
filing date -
Nov 12, 2013
priority date (Note) -
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Abstract
Embodiments for efficient thresholding of nonvolatile storage (NVS) for a plurality of types of storage rank groups by a processor. Target storage devices are determined in a pool of target storage devices as one of a hard disk drive (HDD) and a solid-state drive (SSD) device. Each target storage device classified into an SSD rank group, a Nearline rank group, an Enterprise rank group, and an Ultra-SSD rank group in the pool of target storage devices. The Nearline rank group and the Enterprise rank group comprise a HDD rank group, and the Nearline rank group, the Enterprise rank group, and the SSD rank group comprise the Non-Ultra-SSD rank group. Thresholds are adjusted for preventing space allocation in the NVS for at least one of the classified target storage devices based on one of the presence and absence of identified types of the classified target storage devices.
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