How about a DHCP Server that is meant to itegrate into IPAM. A DHCP Server that can run in Active and Standby modes for redundancy.
I'm not sure what exactly you are asking for but you can add such DHCP server to IPAM (if vendor is supported). IPAM will load DHCP configuration from your server and if it becomes to standby mode then you may see that status of this server/node will be changed to down(different icon) and once it be available again IPAM will do refresh of DHCP scopes. Is this what you are asking for?