公开(公告)号：US20210141538A1

公开(公告)日：2021-05-13

申请号：US17012423

申请日：2020-09-04

Applicant: Hitachi, Ltd.

Inventor： Hideyuki SAKAI ,  Masaharu UKEDA ,  Tomoya OHTA ,  Soichi TAKASHIGE ,  Shinichi HAYASHI

IPC: G06F3/06

Abstract: Volume deployment is optimized while adopting layering corresponding to IO density is adopted. A storage management apparatus calculates remaining IO density based on an amount of remaining IOPS and an amount of a remaining capacity in IOPS and a capacity that are providable by a node, the remaining IOPS and the remaining capacity being not allocated to any volume, controls the layers of the node based on the remaining IO density, selects a node on which a volume is to be deployed based on the difference between the IO density of a deployment target volume and the remaining IO density of the node, and determines a node having the smallest difference between the IO density of the deployment target volume and the remaining IO density of the node in the selection of the node as a deployment destination of the volume.