公开(公告)号：US20220011979A1

公开(公告)日：2022-01-13

申请号：US17351506

申请日：2021-06-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JAE HWAN LIM ,  SEUNG-WOO LIM ,  SUNG-WOOK KIM ,  SO-GEUM KIM ,  JAE EUN KIM ,  DAE HUN YOU ,  WALTER JUN

IPC: G06F3/06

Abstract: A redundant array of independent disks (RAID) storage device including; a memory device including first memory devices configured to store at least one of data chunks and corresponding parity (data chunks/parity) and a second memory device configured to serve as a spare memory region, and a RAID controller including a RAID internal memory configured to store a count table and configured to control performing of a rebuild operation in response to a command received from a host, wherein upon identification of a failed first memory device, the RAID controller accesses used regions of non-failed first memory devices based on the count table and rebuilds data of the failed first memory device using the second memory device.