Hello,  RecoverPoint/CL supports replication between all the arrays you've outlined below.    VNX -> DMX   DMX -> VNX   VNX -> VMAX   VMAX -> VNX  Read more about the broad support offered by RecoverPoint in the RecoverPoint family data sheet.
Thank all of you in advance for any assistance.  Currently have a DMX installed and have a purchase of a VMAX and VNX in the near future.  Can SRDF work between the three devices in any direction?  VNX -> DMX DMX -> VNX VNX -> VMAX VMAX -> VNX etc.  Thank you,  Jim Rash
SRDF between VNX, VMAX, and DMX