RAID storage system, storage controller and RAID array patrol method
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United States of America Patent
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Jul 16, 2019
Grant Date -
Feb 1, 2018
app pub date -
Oct 25, 2016
filing date -
Aug 1, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, a RAID storage system includes a RAID storage device and a storage controller. The RAID storage device includes at least one RAID array. The at least one RAID array has a plurality of stripe groups. The storage controller controls access to the at least one RAID array. The storage controller includes an input/output controller and a patrol controller. The input/output controller executes one of a write access and a read access to a requested stripe group in the at least one RAID array according to an access request from a host device. The patrol controller patrols a stripe group having been subjected to write access, more preferentially than other stripe groups.
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