Hello Bryan,  The only limits are available IP addresses, available switch ports, and that the switch can handle the incresed load.  Especially if you are sharing SAN and LAN traffic over same switch.  Also the link between the switches could need to be increased as well.    There's nothing inherit in the design to prevent it.   In my lab I have quite a few on the same subnet.    Regards, 
Is there anything wrong with having two PS series groups (and therefore their members) in the same /24 subnet and same VLAN?  We have a PS group at one site we are relocating to another site that already has a PS group.  We would like to just leverage the existing networking and VLAN setup we have so I just want to verify it is not a problem to do this.  Thanks, Bryan
Multiple PS groups in the same subnet