Comment by account42
7 hours ago
This makes sense for larger providers but just for a small/personal website there is literally zero advantages to having distributed authoritative DNS servers when the webserver is on a single host.
Ironically, denic still requires you to have two separate name servers with different IPs for your domain (which can be worked around by changing the IP of the registered name server afterwards lol), a requirement that all other registries I use have dropped or never had because enforcing such a policy at the registry level makes zero sense.
It depends. Do you also have email or other services for that domain? The advantage is your email doesn't start bouncing when your single host web site / DNS server is down.
Email bouncing during rare downtimes is hardly that big of an issue - if its actually important the sender will retry, possibly with a different contact method. And for short downtimes most likely the sender's MTA will just automatically retry a bit later - email is designed to work with temporary failures.
There isn't some magic reliability that everyone needs which just so happens to fall into "not achievable with a single authoritative name server" and "guaranteed with two servers". I'm not saying you should never have more than one, just that isn't the registry's business to decide what kind of availability guarantees you need for your domain.