Commvault Systems, Inc.
DATA MIGRATION USING STUBS

Abstract:

An information management system is described herein that implements a slim migration of backup or other secondary copy data. For example, upon receiving a request to migrate primary data corresponding to secondary copy data from one computing system to a network-accessible folder or to another computing system, the information management system can migrate at least a portion of the data as primary data and/or at least a portion of the data as stubs. The use of the stub may be transparent to the user such that the user perceives the stub as being the actual data (e.g., when displayed). Because the stub identifies data included in the secondary copy of data, but is not the actual data itself, a stub may have a smaller file size than the actual data, providing increased data migration speeds.