Method to perform disaster recovery using block data movement

摘要

A method and system for disaster recovery includes a process for executing a disaster recovery client software on a target system. The disaster recovery client software queries a disaster recovery server with an identifier for the target system, receives a backup volume information for the target system from the disaster recovery server, mounts the backup volume to the target system, and transfers data from the backup volume to a physical volume of the target system using a destructive recovery process with block level data transfer.

主权项

1. A computed-implemented method for a disaster recovery of data, the method comprising:
executing a disaster recovery client software executed by a processor on a target system; querying, by the disaster recovery client software, a disaster recovery server with an identifier for the target system, including transmitting the identifier of the target system from the target system over a network to the disaster recovery server, wherein the identifier uniquely identifies the target system; receiving, by the disaster recovery client software at the target system, a backup volume information and a virtual container information for the target system from the disaster recovery server, wherein the backup volume information of a backup volume and the virtual container information are identified by the disaster recovery server based on the identifier of the target system; determining whether there is a sufficient storage space in a physical volume of the target system to restore the backup volume based on the backup volume information; in response to determining that there is sufficient storage space, mounting a virtual container containing the backup volume to the target system based on the virtual container information to allow the target system to access the backup volume of the virtual container maintained by the disaster recovery server over a network, wherein the backup volume is accessible by the target system as if it is a local storage volume; and transferring data from the backup volume contained in the virtual container to the physical volume of the target system using a destructive recovery process with block level data transfer, including
traversing the backup volume in the virtual container at a block level with a plurality of offsets within the backup volume to identify one or more blocks that contain data therein, andcopying only blocks that contain data to the physical volume of the target system, regardless of which files the blocks are associated with.