Computer system, storage management program call-up method, and storage system

A program call-up method for a computer system composed of a first management server, a second management server, and a storage system,

• the first management server comprising a control unit to execute a first storage management program which manages the storage system,
• the second management server comprising a control unit to execute a second storage management program which manages the storage system in a manner different from the first storage management program,
• the storage system comprising a storing unit to store an attribute of the first storage management program which manages the storage system and an attribute of the second storage management program which manages the storage system, the method comprising the steps of:
• the first storage management program obtaining the attribute of the second storage management program from the storage system to manage the storage system, and
• the storage management program calling up the second storage management program with the use of the obtained attribute of the second storage management program.

A storage system comprising:

• disks to store data,
• a control unit to control input/output data to/from the disks and
• a storing unit to store the attribute of the storage management programs that manage the storage system,
• wherein the control unit receives, from one of the storage management programs, a request for the attribute of another of the storage management programs, and sends the attribute of the storage management program stored in the storing unit to the storage management program that has made the request.