One of the more intricate details when discussing CDP is how all the data is actually stored inside the CDP product. NetBackup RealTime is unique in the sense that it has a patented reverse-journal that stores data differently than other CDP offerings. The best way to explain it is with an example.
Let's say you have a 1TB application of some kind and over the course of time you have the following 3 changes:
- Change 1, 100GB
- Change 2, 100GB
- Change 3, 100GB
This is a mass simplification since CDP works at a block level so these changes would not really be 100GB but something like 4k blocks. I'm assuming that change 1 came in first, followed by change 2 and finally change 3 (in that order). So after these 3 changes the app is now 1.3TB in total.
Most CDP products will take the initial full...