Hi Mark,  The difference is pool view  is showing how much has been allocated, member view how much has actually been written out of that allocation.  Regards, 
Hi, I have a single member group, the member disk utilization details are total member capacity 12.22TB, used by volumes 8.17TB snaps and replicas 90meg and member free space 4.04 TB. This varies widely from the details then reported at the Pool disk space, capacity is again 12.22 TB (its a replication target so delegated space is 11.55 TB) reserved for snapshots is 2.5 G reserved for volumes 109.8G reserved for replication 50 G, Free space 518.94G. The two free space figures bother me 4.04Tb for the member verses 518 G for the pool. Does the member free space include all the free space currently unused by the replica reserve for each replicated volume possibly?
Equallogic PS6000 Member free space vs Pool free Space