PARTIAL RESTORE FROM TAPE BACKUP

摘要

Techniques to restore data from backup are disclosed. In various embodiments, an indication of a subcomponent to be restored from backup is received. View information associated with the backup is used to determine a set of physical components required to be retrieved from the backup to restore the requested subcomponent. The determined set of physical components is retrieved from the backup. The retrieved physical components are used to restore the subcomponent. In various embodiments, the view information includes data that identifies each of a plurality of separately-recoverable subcomponents of the backup and for each one or more physical components comprising the backup which would be required to restore that subcomponent.

主权项

1. A method, comprising:
determining a set of one or more physical components to be obtained from a backup to restore a first component, wherein the set of one or more physical components is determined based at least in part on view information corresponding to the set of one or more physical components and that is associated with the set of one or more physical components during a backup process; obtaining the determined set of one or more physical components from the backup; and restoring the first component based at least in part on the obtained set of one or more physical components.