CONTROL DEVICE, STORAGE SYSTEM, AND METHOD OF CONTROLLING A PLURALITY OF STORAGE DEVICES

摘要

A control device includes a processor configured to migrate data in a first partial storage area of a first storage device to a second partial storage area of a third storage device, change an access destination of access to the first partial storage area to the second partial storage area, control a writing of a first part of first data into a remaining partial storage area other than the first partial storage area of the first storage device, control a writing of a second part of the first data into the second partial storage area of the third storage device, and control a writing of at least a third part of second data into a second storage device, wherein a data volume of the first part of the first data is different from a data volume of the third part of the second data.

主权项

1. A control device for controlling a plurality of storage devices, the control device comprising:
a memory; and a processor coupled to the memory and configured to
detect that the amount of data written in a first storage device from the plurality of storage devices is larger than a first value, and that the amount of data written in a second storage device from the plurality of storage devices is larger than the first value,control a migration of data in a first partial storage area of the first storage device to a second partial storage area of a third storage device included in the plurality of storage devices,change an access destination of access to the first partial storage area to the second partial storage area,control a writing of a first part of first data into a remaining partial storage area of the first storage device other than the first partial storage area of the first storage device, and control a writing of a second part of the first data into the second partial storage area of the third storage device, andcontrol a writing of at least a third part of second data into the second storage device, wherein a data volume of the first part of the first data is different from a data volume of the third part of the second data.