Beginning in Purity 5.1.3 Managed Snapshots behavior was changed to copy the Data Volumes to new volumes in the Array Volume Group vs taking array based snapshots of the data volumes. As part of this update, data reduction numbers will now differ. Since VMwareis essentially asking the array to create several identical volumes through VASA and the Array will oblige and dedup them appropriately. Which means that the more Managed Snapshots that are taken, the higher the data reduction on number on the Volume Group will become. Overall increasing the Array data reduction numbers.