Backup is the thorn in the side of many otherwise smoothly running IT operations. The primary problem is size; there is too much data, too much that is stagnant and unchanging. Real-time compression products like Storwize compress file-based data in place and, in most cases, achieve better than 60% reduction of data. The next step is to look into software that will reduce the amount of data sent across the network in the first place. Most studies indicate that more than 80% of this data can be archived and moved out of the backup process in its entirety.”]
Source: https://www.darkreading.com/database-security/better-storage-practices-to-improve-backup