STORAGE SYSTEM AND STORAGE CONTROL METHOD

摘要

A storage system includes: a storage device including a recording medium that stores data and a device controller that executes addition processing involving a change of state of the data with respect to the data; and a storage controller that controls input and output of data for the storage device. The storage controller transmits, to the storage device, determination information that can be utilized by the device controller for determining whether or not to execute the addition processing along with input-output processing relating to input-output target data. The device controller controls execution of the addition processing with respect to the input-output target data based on the determination information transmitted from the storage controller.

主权项

1. A storage system comprising:
a plurality of storage devices, each of the plurality of storage devices includes a storage medium and a device controller configured to compress data and a storage controller configured to control the plurality of storage devices as a RAID group, each of the plurality of storage devices storing data and parity based on a configuration of the RAID group wherein the storage controller is configured to send an information of storage area which stores the parity based on the configuration of the RAID group to each of the plurality of storage devices and the device controller of each of the plurality of storage devices is configured to store the parity into the storage medium without compressing the parity based on the information.