On a VNXe3200, on a 6.2 TB storage pool, I have VMware thin datastores that total 4.5 TB.  There are no other storage resources.  In Unisphere on both the dashboard and the Storage Pools detail, the Subscription is reported as 5.5 TB.   What's happened to the other 1.0 TB?   In the subscription calculation, is consideration given to datastores with snapshot schedules?