Patent ID: 8412884
Filing Date: 2013-04-02
Classification: G06F

Abstract:
1. A storage system for storing data requested by a host computer to be written, the storage system comprising: a host interface coupled to the host computer; a storage device for storing the data requested by the host computer to be written; a disk interface connected to the storage device; at least one processor for processing the data requested to be written; a cache memory for storing the data requested by the host computer to be written; and a cache controller for controlling data inputs to and outputs from the cache memory, wherein: wherein the at least one processor is configured to: back up data held in the second memory to the first memory; stop a function of the access destination determination unit; change a configuration of a device installed in the storage system or detect a change in the configuration of the device installed in the storage system; determine a place to store control information related to the device based on configuration information after the change of the configuration of the device; set the determined place to store the control information to the access destination information; migrate at least part of the control information held in the first memory to the second memory in accordance with the determined place to store the control information; and resume the function of the access destination determination unit after the migration.