Computer system, management method of computer resource and program

A method of managing a computer resource, which is used in a computer system comprising the computer resource including one or more servers and a storage coupled to the one or more servers, for providing an application, and a management server including a processor and a memory, for managing the computer resource, and in which the management server allocates the computer resource to the application,

• the management server holding:
• application information containing an identifier of the application, a system image corresponding to the identifier of the application, a number of uses of the application, a server used by the application, the storage used by the application, and in association with the identifier of the application, whether application data which is used in the application is stored, and a location of the storage in which the application data is stored;
• and
• resource information containing performance information of the one or more servers and the storage constituting the computer resource, a use status, and a connection relationship, the method of managing a computer resource comprising:
• a first step of receiving, by the management server, a resource allocation request comprising the identifier of the application, and a required amount of resource including an amount of resource to be allocated to the application;
• a second step of referring, by the management server, to the application information to identify the application and the system image corresponding to the identifier, acquiring the number of uses of the application and whether the application data is stored, and judging whether a use of the application is a first time or reuse from the number of uses;
• a third step of determining, by the management server, when the use of the application is the first time or the application data is not stored, a server and the storage to be allocated to the application from the required amount of resource and the resource information;
• a fourth step of receiving, by invoking a release module, the identifier of the application from which the computer resource is to be released, whether to store the application data used by the application, and the type of storing the application when the application data is to be stored, and releasing the computer resource after storing the application data to the storage in accordance with the type of storing when the application data is to be stored, wherein the release module is configured to release computer resource allocated to an application;
• a fifth step of acquiring, by the management server, when the use of the application is reuse and the application data is stored, the location of the storage in which the application data is stored from the application information, and
• determining a combination of a server and a storage which satisfies the required amount of resource and is accessible to the application data by referring to the resource information,
• wherein when the application data is stored as backup data, instead determining a combination of the different storage satisfying the required amount of resource for a server and a storage which satisfies the required amount of resource and is accessible to the storage different from the storage storing the application data by referring to the resource information;
• and
• a sixth step of allocating, by the management server, the system image to the determined server.

A computer-readable non-transitory data storage medium, containing a program for controlling a computer resource including one or more servers and a storage coupled to the one or more servers, for providing an application, and a management server including a processor and a memory, for managing the computer resource, the program controlling the management server to execute the procedures of:

• storing in the memory:
• application information holding an identifier of the application, a system image corresponding to the identifier of the application, a number of uses of the application, a server used by the application, the storage used by the application, whether the application data used in the application is stored, and a location of the storage in which the application data is stored;
• and
• resource information holding performance information of the one or more servers and the storage constituting the computer resource, a use status, and a connection relationship;
• receiving a resource allocation request comprising the identifier of the application, and a required amount of resource including an amount of resource to be allocated to the application;
• referring to the application information to identify the application and the system image corresponding to the identifier, acquiring the number of uses of the application and whether the application data is stored, and judging whether a use of the application is a first time or reuse from the number of uses;
• when the use of the application is the first time or the application data is not stored, determining a server and the storage to be allocated to the application from the required amount of resource and the resource information;
• receiving the identifier of the application from which the computer resource is to be released, whether to store application data used by the application, and the type of storing the application data when the application data is to be stored, and releasing the computer resource after storing the application data to the storage in accordance with the type of storing when the application data is to be stored;
• when the use of the application is reuse and the application data is stored, acquiring the location of the storage in which the application data is stored from the application information, and determining a combination of a server and a storage which satisfies the required amount of resource and is accessible to the application data by referring to the resource information, wherein when the application data is stored as backup data, instead determining a combination of the different storage satisfying the required amount of resource for a server and a storage which satisfies the required amount of resource and is accessible to the storage different from the storage storing the application data by referring to the resource information;
• and allocating the system image to the determined server.