Patent ID: 7656806

Claim:
A storage system in which a host system as a higher-level device and a storage apparatus providing a volume to said host system for reading and writing data are connected via a plurality of first paths, comprising: a path switching unit provided to said host system and executing path switching control for dynamically switching the path to be used by said host system according to a first policy for equalizing load between the plurality of first paths connecting said host system to said volume; and a management unit for presenting information to a user on a display of said management unit that relates each of said plurality of first paths to its respective condition and for setting, in response to said user's instructions via said display, a second policy of excluding at least one path that is selected by said user from among said plurality of first paths from consideration as a target of said path switching control for dynamically switching the path to be used by said host system, and controlling said path switching unit to execute said path switching control based on said first policy and said second policy.