Accelerated recovery after a data disaster

摘要

According to embodiments of the present invention, a metadata file is transferred from the first system to the second system and a database on the second system is initialized based on the metadata file. An image, including information of the first system to be restored, is transferred from the first system to the second system, and restoration of the information to the second system based on the image is initiated. Prior to completion of the restoration, one or more log files indicating actions performed on the first system relating to the information to be restored is transferred from the first system to the initialized database on the second system. In response to completion of the restoration, the actions of the log files are performed to synchronize the restored data on the second system with the first system.

主权项

1. A method of restoring data from a first system onto a second system comprising:
transferring from the first system to the second system a metadata file and initializing a database on the second system based on the metadata file; transferring from the first system to the second system an image including information of the first system to be restored and initiating restoration of the information to the second system based on the image; prior to completion of the restoration, transferring from the first system to the initialized database on the second system one or more log files indicating actions performed on the first system relating to the information to be restored; sending an acknowledgment from the second system to the first system in response to receipt of a log file to perform an action of the received log file at the first system upon receiving the acknowledgement from the second system in order to prevent data loss; and in response to completion of the restoration, performing the actions of the log files to synchronize the restored data on the second system with the first system.