Application server, cloud device, storage medium access monitoring method and computer program

摘要

An application server or the like capable of eliminating a delay when a delay occurs in access to a storage medium by an application program operating on an application server. The application server includes an execution unit that executes the application program in response to a request from the client device and returns a response to the client device, a measurement unit that measures a value representing performance when accessing the storage medium by execution of the application program, And a management unit for controlling to add a storage medium when it is determined that the performance on access to the storage medium is deteriorated based on the value measured by the unit.