Redundant array of independent disks (RAID) write hole solutions
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United States of America Patent
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Mar 20, 2018
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N/A
app pub date -
Nov 3, 2015
filing date -
Nov 3, 2015
priority date (Note) -
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Abstract
An apparatus includes a plurality of drives configured as a redundant array of independent disks (RAID) and drive array controller logic to: calculate a first partial parity log (PPL) value for a first write operation that targets a first active stripe of the plurality of drives; store the first PPL value in a first pre-allocated portion of the plurality of drives that depends on a first number associated with the first active stripe; calculate a second PPL value for a second write operation that targets a second active stripe of the plurality of drives; and store the second PPL value in a second pre-allocated portion of the plurality of drives that depends on a second number associated with the second active stripe.
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