I have multiple 2012r2 DHCP servers. Recently I have had multiple DHCP servers crash because of power problems. When the servers get power and come back up the DHCP service is started, but will not work until I restart the service. I do allow those servers to update and reboot as needed, but I have never had an issue when that happens. Not sure if I should change the service to Automatic(delayed start), but does anyone have any ideas why I would need to restart the DHCP server service in these situations? This has happened 3 times this week on two different DHCP servers, which are also Domain Controllers. As soon as the DHCP service is restarted, dozens of leases start showing renewal within a minute. It really messes up our monitoring, because we can see those servers go offline, but we monitor the DHCP server service when it comes back online and think all is good.
Thanks,
Dave