Restoration of data from a backup storage volume

摘要

A method is provided for restoring data from a backup storage volume onto a source storage volume. A content of a memory unit of the backup storage volume and a content of the corresponding memory unit of the source storage volume are loaded into a computer memory, and are compared in the computer memory for identity. The content of the memory unit of the backup storage volume is written to the corresponding memory unit of the source storage volume if the comparison indicates that the content of the compared memory units is not identical. The invention further relates to a system for restoring data from a backup storage volume onto a source storage volume comprising a restore software running on a data processing device, which is connected to the backup storage volume and the source storage volume, whereby the restore software performs the above method.

主权项

1. A system for restoring data from a backup storage volume onto a source storage volume, the system comprising:
a processor coupled to the backup storage volume, the source storage volume, and a computer memory having restore software therein; wherein the processor is programmed execute the restore software to restore data by:
taking a snapshot of the source storage volume to create the storage backup storage volume;creating a change log indicating addresses of the source storage volume that have been written to after the taking of the snapshot;identifying a select address from the change log;loading into a computer memory, content of a memory unit of the backup storage volume corresponding to the select address;loading into the computer memory, content of a memory unit of the source storage volume corresponding to the select address;comparing, using a processor, the content of the memory unit of the backup storage volume and the content of the corresponding memory unit of the source storage volume loaded in the computer memory; andwriting the content of the memory unit of the backup storage volume to the corresponding memory unit of the source storage volume if the comparison indicates that the content of the compared memory units are not identical.