We have DCX 8510-8, currently we are using port blades FC16-48 in slot 1 & 2, I wanted to know if we can add FC16-64 port blades in slot 3 & 4. Is this kind of intermix allowed in brocade?
yes, both are supported.
however if the DCX have only TWO Power Supply, then you are in range with the power, since the FC16-64 is categorized as Application Blade
Directors Class Switches, not required POD License for standard Port Blade. All Ports are enable chassis wide