Backup
Backup provides a feature of taking a backup of files which are opened by a user or system. This feature is referred to as volume shadow copy. Volume shadow copy creates a duplicate copy of all documents at the beginning of the backup procedure. This way, files which have changed during the backup process are copied properly. Due to this feature, software can keep on writing data to the volume during a copy operation, and copies can be scheduled at any time without locking out users.