A Block-level Continuous Data Protection System Design

This paper presents a continuous data protection system design based on logical volume,and elucidates its structure and method.The system does not depend on the specific storage devices,it can achieve the continuous block-level data protection and can restore data to any time point.The system provides a unique organizational structure of data and the corresponding management strategy,and has a good recovery efficiency.The system provides an economic,common software-only programmes,to promote wider application.