Dell PowerVault DR2000v - Manual (Page 38)

38 Setting Up the Dell™ DR Series System on Symantec NetBackup to Use Backup Acceleration | May 2014
6 Monitor deduplication, compression, and performance
After backup jobs have run, the DR Series system tracks capacity, storage savings, and throughput on the DR Series
system dashboard. This information is valuable in understanding the benefits of the DR Series system.
Note: Deduplication ratios increase over time. It is not uncommon to see a 2-4x reduction (25-50% total savings) on
the initial backup. As additional full backup jobs are completed, the ratios will increase. Backup jobs with a 12-week
retention will average a 15x ratio, in most cases.