1. An application management support system, comprising: a host computer for executing one or more application programs for issuing a write request specifying a logical volume allocated from among a plurality of logical volumes in a storage system having a CDP (Continuous Data Protection) function for restoring data at an RPO (Recovery Point Objective) time inside a specified logical volume; and a management computer for managing said storage system, said management computer comprising: a first information resource denoting which logical volume is allocated to which application program; a volume update manager for acquiring from said storage system, either regularly or irregularly, information as to which logical volume has been updated at what time, and for registering same in a second information resource; an update management information acquisition unit for referencing said first and second information resources, and acquiring update management information, which is information denoting which logical volume has been updated at what time, and to which application program this logical volume is allocated; and an update management information sending unit for sending acquired update management information to the host computer having the application program denoted in this update management information, and said host computer comprising: a receiver for receiving update management information from said management computer; and a host controller for displaying, based on received update management information, which logical volume has been updated at what time, and which application program is allocated to this logical volume.