The article was shared with me. The only issue that the article cites is possible array wide performance degradation. It looks like this is related to the rate at which UNMAP commands are issued, which can cause internal queues to saturate. It does say that the performance issue would stop when the UNMAP jobs stop, though.
Does Dell/EMC recommend using VMWare's VMFS6 Automatic Space Reclamation. If so, what setting to use, Priority, Fixed, etc. Does a Best Practice document exist?
Hybrid Unity 400 and VMWare Automatic Space Reclamation on VMFS6