1. A system for backup, comprising: a storage device, wherein the storage device comprises one or more volumes; a processor configured to: receive a request for a backup including a set of target volumes for a backup set; assign one or more target volumes of the set of target volumes to a volume copy service of a plurality of volume copy services, wherein the volume copy service is configured to coordinate copying one or more change blocks to the one or more target volumes; halt writes to the one or more target volumes of the set of target volumes; create a backup for each of the one or more target volumes; create one or more empty maps associated with the one or more change blocks; start Event Tracing for Windows tracking for the one or more empty maps; and release writes to each of the one or more target volumes; and a memory coupled to the processor and configured to provide the processor with instructions.