You will want to put your whole network on one or more Uninterruptable Power Supplies (UPS). This would include:
Cable/DSL modem (not shown)
Firewall
LAN switches
Domain 3000
Other ports (not shown)
Power to Shubs
The PC to be used for “gotomypc”, file backups, serving music, etc.
Then, connect the Uninterruptable Power Supplies to a backup generator through an automatic switch. That is, the switch will automatically switch from house-power to generator-power when power to the home is lost, and it will automatically start the generator.
Finally, use separate power strips for each of the following groups of devices.
Domain Controller and any power supplies supplying power through relays in the Domain Controller
3rd party ports and the power supplies supplying power through their relays
Shub & Sensor power supply and the 10/100 LAN switch that networks the multiple Shubs together and connects to the Domain 3000
The rest of the data network such as the Cable or DSL modem, firewall, and LAN switches
