Patent ID: 8516191

Claim:
A storage system, comprising: a plurality of file servers each configured to provide a plurality of virtual file servers respectively to a plurality of host apparatuses; a storage apparatus operatively coupled to the plurality of file servers, the storage apparatus including a plurality of storage devices from which a plurality of logical units that are provided to the plurality of virtual file servers are formed and a controller for controlling access by the plurality of virtual file servers of the plurality of logical units; and a management apparatus including a user interface and operatively coupled to the file servers and the storage apparatus, the management apparatus being configured to: obtain first performance information from the plurality of file servers and second performance information from the storage apparatus, the first performance information indicating performance of each virtual file server of each file server and the second performance information indicating performance of physical resources of the storage apparatus, calculate a relative performance of the physical resources in relation to each of the plurality of virtual, file servers using the first performance information, the second performance information, and port information indicating which port is used between the virtual file servers and the controller, and display system performance information on the user interface, the system performance information indicating the relative performance of the physical resources of the storage apparatus in relation to each of the plurality of virtual file servers, and wherein, for each of the plurality of virtual file servers respectively provided by each file server, the management terminal is configured to calculate the relative performance of the physical resources in relation to the respective virtual file server by calculating a sum of a corresponding I/O amount per unit time in each port of the controller, dividing the corresponding I/O amount per unit time in the port of the controller being used by the respective virtual file server by the calculated sum to calculate a ratio for the port being used by the respective virtual file server, multiplying a processor operating ratio of the controller by the calculated ratio to calculate a processor operating ratio in relation to the respective virtual file server, and multiplying a memory usage ratio of the controller by the calculated ratio to calculate a memory usage ratio in relation to the respective virtual file server.