| 摘要 |
The present invention grasps in advance a portion in which traffic is concentrated and which may become a bottleneck and simplifies management of an access path. In a storage network system that forms multiple paths between a large-capacity data storage device and a host computer that employs the data storage device, and transfers data by means of a selected path, access paths are managed by a management server. The management server selects a second access path that can be used as a replacement of a first access path that connects the data storage device with the host computer, and calculates the quantity of traffic on the first access path which is associated with a device disposed on the first access path. Also, the management server calculates a variation of the quantity of traffic on the second access path which is associated with a device disposed on the second access path taking the calculated quantity of traffic into consideration. Then, the management server determines whether the device on the second access path causes a bottleneck or not, according to the calculated value of the variation of traffic on the second access path. The management server 11 transfers the determined result to the outside, for example, a display device, and notifies a manager of the determined result.
|
