METHOD AND APPARATUS FOR PERFORMING DATA RECOVERY IN REDUNDANT STORAGE SYSTEM
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United States of America Patent
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Issued Date -
Nov 16, 2017
app pub date -
Apr 20, 2017
filing date -
May 13, 2016
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Abstract
A method for performing data recovery in a redundant storage system and an associated apparatus are provided. The method includes: determining a state of a cache block of a plurality of cache blocks, in which the plurality of storage devices includes a set of Hard Disk Drives (HDDs) and a set of Solid State Drives (SSDs), an SSD Redundant Array of Independent Disk (RAID) of the redundant storage system includes the set of SSDs, and an HDD RAID of the redundant storage system includes the set of HDDs, in which the SSD RAID is utilized as a cache system of the HDD RAID and includes the plurality of cache blocks; and performing a retry-read operation on at least one of the HDD RAID and the SSD RAID according to the state of the cache block, to obtain a correct version of data within the redundant storage system.
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