So today my website went down, I wasn't expecting it to, and the support said it was due to a faulty hardware and unhappily it was out of my control...
Then I tough to myself, hell DH is so great why it doesn't have a backup server that allow us to show a custom page, that we can customize on our control panel with some message/html/whatever, for example:
"Hey our website is down for a schedule maintenance check back later!"
Or something alike...
This is my scenario on today's issue, the DNS was working properly, given that, it would not trigger secondary DNS in case you had one setup.
I could have changed the IP of the domain redirecting it to another service to show the said above mentioned page, however, since it requires the DNS to propagate, not all users would be seeing the same page, right? Which would be a problem and then you have to set the IP back to resume the services, which is an annoyance due to the DNS propagation.
However if DH was to have a backup server for such issues where when our sites have to go or are down for whatever reason they can simple turn a switch and even make that switch available to us in case we need, that would simple redirect the domain to a backup server with that custom page, which we can customize in our control panel, that did be awesome!
Thus even if our domain server goes down, we are still able to reach our clients and users with a message about what is going on or to keep em up to date.
Hope you consider and accept my suggestion.
NOTE: Basically it would work as a secondary DNS for when your DNS is still responding... As mentioned above a secondary DNS will not be reached unless the primary DNS times out, but that does not take into account the web server of your domain's DNS, AFAIK, but feel to correct me here.