enterprise a disaster recovery scenario sdc vappliances are used for the logical configuration of sdc 39 s within a tenants private cloud a router node is a physical server or node in an tenant 39 s private cloud that may be used to host certain vappliances relating sdc networking such vappliances may include the router ddns and br rtr bridge router vapplications that may be used to route internet traffic to and from an sdc as well as establish logical boundaries for sdc accessibility two router nodes exist an active node a and a standby node s used in the event that the active node experiences failure the firewall nodes also present in an active and standby pair are used to filter internet traffic coming into an sdc there is a singular vappliance that uses the firewall node that being the firewall vappliance the vappliances are configured through use of vappliance templates which are downloaded and stored by the tenant in the appliance store template store reference is now made to fig2 depicting a block diagram describing a tenancy configuration wherein the enterprise hosts systems and methods within its own data center in accordance with the principles of the present invention the ucloud platform 100 is hosted directly on an enterprise 200 which may be a service provider such as but not limited to verizon fios or at amp t uverse which serves tenants a n 202 204 and 206 respectively alternatively enterprise 200 may be an enterprise having subsidiaries or departments 202 204 and 206 that it chooses to keep segregated reference is now made to.