Disaster recovery system, virtual computer recovery method and management server

摘要

The purpose of this research is to transfer the latest data which can be transferred to the backup site by the main site.A first physical server executing a virtual computer andA management server for restoring a virtual computer of a physical server by a second physical serverHaveFirst physical serverThe difference data of the virtual machine is transmitted to the second physical server asynchronously.Management serverReceive an emergency BulletinAn emergency timer receiver that calculates the grace time for the first physical server to be affected by the emergencyA switching decision unit for selecting a recovery pattern according to the size of a predetermined time from the predetermined recovery pattern information andDepending on the selected recovery patternThe data of the virtual computer to be transmitted from the first physical server to the second physical server is designated, and the difference is transmitted to the first physical server.A switching instruction unit for activating a virtual computer based on difference data to a second physical server.Diagram