公开(公告)号：GB2511970B

公开(公告)日：2020-03-25

申请号：GB201410697

申请日：2012-11-09

Applicant: IBM

Inventor： MICHAEL THOMAS BENHASE ,  LOKESH MOHAN GUPTA ,  CHRISTOPHER STRAUSS ,  WILL ALLEN WRIGHT

IPC: G06F12/126 ,  G06F3/06

Abstract: A storage controller that includes a cache receives a command from a host, wherein a set of criteria corresponding to read and write response times for executing the command have to be satisfied. The storage controller determines ranks of a first type and ranks of a second type corresponding to a plurality of volumes coupled to the storage controller, wherein the command is to be executed with respect to the ranks of the first type. Destage rate corresponding to the ranks of the first type are adjusted to be less than a default destage rate corresponding to the ranks of the second type, wherein the set of criteria corresponding to the read and write response times for executing the command are satisfied.