Invention Grant
US08639877B2 Wear leveling of solid state disks distributed in a plurality of redundant array of independent disk ranks
有权
分散在独立磁盘排列的多个冗余阵列中的固态磁盘的磨损均衡
- Patent Title: Wear leveling of solid state disks distributed in a plurality of redundant array of independent disk ranks
- Patent Title (中): 分散在独立磁盘排列的多个冗余阵列中的固态磁盘的磨损均衡
-
Application No.: US12495244Application Date: 2009-06-30
-
Publication No.: US08639877B2Publication Date: 2014-01-28
- Inventor: Michael Thomas Benhase , Andrew Dale Walls
- Applicant: Michael Thomas Benhase , Andrew Dale Walls
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Konrad, Raynes, Davda and Victor LLP
- Agent Rabindranath Dutta
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28
Abstract:
A computational device allocates a plurality of solid state disks to a plurality of redundant array of independent disk (RAID) ranks, wherein a different solid state disk is absent in each RAID rank of the plurality of RAID ranks. The computational device determines at least one selected solid state disk from the plurality of solid state disks, wherein the at least one selected solid state disk is estimated to have undergone a greater amount of wear in comparison to other solid state disks in the plurality of solid state disks. Relatively more data and parity information is written to those RAID ranks in which the at least one selected solid state disk is absent in comparison to those RAID ranks in which the at least one selected solid state disk is present.
Public/Granted literature
Information query
