SERVICE MIGRATION METHOD AND DEVICE AND DISASTER TOLERANCE SYSTEM

摘要

Disclosed are a method and device for migrating an application virtual machine from a source data centre to a target data centre, and a disaster tolerance system, so as to recover services rapidly when a disaster occurs in a data centre. The method comprises: a data centre management server acquiring the specification of an application virtual machine and the network information about the application virtual machine; the data centre management server sending a creation instruction to a target data centre, the creation instruction being used for creating the application virtual machine on a target server according to the specification of the application virtual machine, and configuring a network for the application virtual machine according to the network information about the application virtual machine; the data centre management server sending a mounting instruction to the target data centre; and the data centre management server sending a start instruction to the target data centre. Once a catastrophic failure has occurred in a data centre where services containing the application virtual machine are located, the services can be rapidly migrated to the other data centre, and in the other data centre, all the services containing the application virtual machine are recovered within a short time.