Maybe someone could help me out reasoning this out. We have a node failure on one of our 8200's. The node failed more than a week ago (still waiting for a replacement from HPE

While the node is failed noticing that :
InSplore and graphs cannot be generated.
Also noticing space issues for instance we have allocated a 13TB space from storage (dedup R6 volume) to our VMware cluster (VMFS 6 so unmap should run automatically). From 13Tb we are consuming around 7TB.
From storage side we are seeing capacity allocated increasing with compaction ratio going down and dedup back to 1:1.
Free space on this storage is now at 3% constantly decreasing.
HPE are saying that this is normal growth however from our end from Vmware side we are still seeing just 7Tb being utilised. So how come storage space on the 3PAR is increasing constantly?
--Estimated(MB)---
RawFree UsableFree
374400 249600
MTB-3PAR-M cli%
Just wondering if anyone has experienced a behaviour similar to ours and more importantly if we are risking that the storage goes out of space.
Thank you