Somebody asked me difference between DMX3 and DMX4 - I only able to tell him that DMX4 is END-to-END 4gbps but DMX3 was still using the 2gbps backend connecvitivty .  Is there anything changed on Backend Loop Design as well (Heard that it changed from point to point TO Asci )??  Also DMX4 is big brother of DMX3 so there is no change is capacity it can host it same as DMX3 but there is change is Chache size and controller speed.

VMAX and DMX4 there is plenty of differences but as far as architecture is concern its become modualar due to engine concept.

In old DMX's we were having different boards for FA's and DA's & Cache but in VMAX we have all on one Engine.

Anything else on architecture side please let me know ??