The delta is generated by extracting the differences between the latest file to backup and the original file stored on the server. Both files are divided into individual blocks using the same block size and the blocks compared to determine whether theyre the same or different. The differences are extracted into the delta file.
Assume the initial full file is 100MB and grows daily by 10MB. The files uploaded to the server and the approximate storage space required is as follows:
* De opslagcapaciteit is bij benadering en kan in de praktijk afwijken.