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A *recovery point* is created as the result of data replication. The first recovery point is called an *initial replica* because it is performed only one time as long as the storage medium is not replaced. !scheme02.png!
In a [Virtual Full Backup|TP:Backup Method - Virtual Full Backup] each recovery point is comprised of many Deltas. A Delta represents the state of a disk volume block at a particular point in time. Each Delta can be used by one or more Recovery Point. The relationship between Deltas and Recovery Points is maintained by the [Disk Safe|Disk Safes].