Storage network system, managing apparatus managing method and program

A computer system comprising:

• a host computer having a plurality of host ports;
• a storage system having a plurality of storage ports and a plurality of volumes;
• and
• a management computer, coupled to the host computer and the storage system, and having access path information indicating a plurality of access paths, each including a set of one of the plurality of host ports ,one of the plurality of storage ports, and one of the plurality of volumes,
• wherein the management computer stores a traffic amount of the plurality of host ports and the plurality of storage ports,
• wherein the management computer receives a first request specifying a certain volume which is one of the plurality of volumes, specifies plural parts of the plurality of access paths each including the certain volume, and displays a part of the traffic amount of the plurality of host ports and the plurality of storage ports, corresponding to the plural parts of the plurality of access paths.