The backup which uses meta data imagination hard drive and finite difference imagination hard drive

摘要

Meta data imagination hard drive (VHD) and method for backing up which uses finite difference VHD and the system are disclosed. In order that the system of specification, detects the memory unit which remembers the file and the modification for the file, the backup agent which is formed and, it includes. In order that the modification which is detected is translated in modification of VHD format type in order that the translation module which is formed and modification of VHD format type is written to the meta data VHD which is remembered in the memory unit the VHD module which is formed are included in the system. In addition as for VHD module, in order that finite difference VHD is formed on the basis of meta data VHD it is constituted. The network interface in the system is formed, in order that it transmits with meta data VHD and finite difference VHD to the remote storage unit.