Implementation of Service Migration Based on Data-Level Disaster Recovery System

Traditional data-level disaster recovery technology can provide data-level real-time backup and restoration,while still have limitations in providing service continuity.The service-level disaster recovery technology can provide service continuity and data consistency in service-level,but often requires a complicated system design.An implementation of service migration based on the traditional remote disaster recovery system can solve all these problems.When the client server suffered from disasters and stopped providing services,another image server with the same software configuration use the iSCSI protocol to initiate a connection to the storage server and established an iSCSI based remote logic volume.With the virtual logic volume,the image server can keep providing services and ensure the data consistency.When the client server restored from the malfunction,the system can switch from the migrating state to the original state,and the client server can keep providing services.With this implementation the traditional remote disaster recovery system can provide service-level data consistency and service continuity,which will further improve the companies' disaster recovery capabilities of key business.