I/O PERFORMANCE IN RAID STORAGE SYSTEMS THAT HAVE INCONSISTENT DATA
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United States of America Patent
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N/A
Issued Date -
Oct 13, 2016
app pub date -
Apr 7, 2015
filing date -
Apr 7, 2015
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Embodiments herein provide for data storage where inconsistent data exists. In one embodiment, a method comprises configuring a plurality of storage devices to operate as a Redundant Array of Independent Disks (RAID) storage system and initiating the RAID storage system to process Input/Output (I/O) requests from a host system to the storage devices. The method also comprises identifying where RAID consistent data exists after the RAID storage system is initiated, performing read-modify-write operations for write I/O requests directed to the RAID consistent data according to a marker identifying where the RAID consistent data exists, and performing a different type of write operations for write I/O requests directed to the inconsistent data according to the marker in order to make the inconsistent data RAID consistent. The marker is adjusted when the inconsistent data is made RAID consistent.
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