公开(公告)号：US09921914B2

公开(公告)日：2018-03-20

申请号：US14931730

申请日：2015-11-03

Applicant: Intel Corporation

Inventor： Slawomir Ptak ,  Sanjeev N Trika ,  Piotr Wysocki ,  Kapil Karkra ,  Rajib Ghosal

IPC: G06F11/00 ,  G06F11/10 ,  G06F3/06

CPC classification number: G06F11/1096 ,  G06F3/061 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0659 ,  G06F3/0689

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.