Computer system

摘要

The present invention provides techniques, including a method and system, for relocating data between storage systems 200. In one embodiment of the present invention a host 100 collects usage information from a plurality of storage systems 200, and determines the relocation destination LU for data stored in the LU to be relocated. The host 100 alters an LU logical position name table 191 that determines matching between the logical position names of data and LUs. It also carries out data relocation between storage subsystems 200 by shifting data stored in an origin LU to be relocated to a destination LU. In another embodiment relocation of files is provided.