SYSTEM AND METHOD FOR CONTROLLING AUTOMATED PAGE-BASED TIER MANAGEMENT IN STORAGE SYSTEMS

摘要

The system includes host computers, file servers and a storage system having automated page-based management means. The storage system interface receives instructions to change the condition for decision for migration regarding particular parts or the whole volume. The host computer can control execution of the migration performed by the storage system by specifying areas or volumes with the condition via the interface. Highly optimized, appropriate data placement and data relocation in computer system can be achieved when the application, host computer or management computer can recognize or predict the usage of the data or files. The storage system having automated page-based management may include compression/decompression and a control method for the compression and decompression process.

主权项

1. A system comprising:
a plurality of storage devices; and a processor being operable to control a write operation and a read operation for a storage volume, the storage volume being operable to comprise a first storage area, to which a first tier area of a higher tier of the plurality of storage devices is allocated, and a second storage area, to which a second tier area of a lower tier of the plurality of storage devices is allocated, the processor being operable to manage data migration, between the higher tier and the lower tier, and to store compressed data of the first storage area in the lower tier in the case where uncompressed data of the first storage area is migrated from the higher tier to the lower tier.