Network topology display method, management server, and computer program product

A management server for displaying a network topology or a storage network including a storage controller having a virtual volume, and an external storage system having an external volume, wherein the external volume is mapped to the virtual volume,

• the management server comprising:
• a management table for storing port connection information about an access path defined between the virtual volume and the external volume, a first network address for identifying an access port of the storage controller on the access path, a second network address for identifying an access port of the external storage system on the access paths and identification information for identifying the external volume;
• and
• a display unit for displaying the network topology of the storage network, based on the first network address, the second network address, and the identification information stored in the management table.

A computer program product having a network management program for causing a computer system to execute processing to display a network topology of a storage network including a storage controller having a virtual volume, and an external storage system having an external volume mapped to the virtual volume.

• wherein the network management program causes the computer system to execute the steps of:
• collecting port connection information about an access path defined between the virtual volume and the external volume;
• collecting a first network address for identifying an access port of the storage controller on the access path;
• collecting a second network address for identifying an access port of the external storage system on the access path;
• collecting identification information for identifying the external volume;
• and
• displaying the network topology between the virtual volume and the external volume, based on the port connection information, the first network address, the second network address, and the identification information.