A Full Establish will send all of the data from the R1 to the R2 (well the tracks with no data won't actually be sent as 128KB of zeros, but marked as sent). Any data that is changed on the R2 as a result of the Full Establish AND has not already been modified since the SNAPVX snapshot was taken will add to the PIT data being kept. So assuming there is actual data on all 5TB, then your 1TB of snapshot will grow to 5TB. SNAPVX is just doing its job of preserving the PIT on the R2 device. It doesn't matter where the changes to the R2 come from.
I have the following setup: Both VMAX arrays are 250F models.  R1 (5TB) ------//------->   R2 (5TB)----(no copy linked snapshot)--->snapvx tgt devices (1TB of changed tracks)         (split)  If I perform a deletepair and full establish on this RDF devices, what happens to downstream linked snapshot ? Will it consume all 5TB since the full establish causes all tracks to change on the R2 side ?   You might ask, why are you doing full establish ?? I just need to know what would happen.[IMAGE][IMAGE]
Does a SRDF full establish make downstream no copy snavpx full copies ?