When a system is deployed with Fold/Unfold enabled, three extra IP addresses are provisioned and assigned on each node. These IP addresses are redistributed during scaling out and scaling in. No new COP IP addresses are allocated for scaling out and no COP IP addresses are removed for scaling in. Client machines can use the same group of COP entries to connect to the scaled out or scaled in system. In other words, scaling out and scaling in are transparent on client machines that have properly configured COP entries.