I started moving accounts from one cPanel server to another at a different hosting facility. The accounts were being moved from my Colocated servers to a VPS.
During the transfer I also wanted to change the nameservers for all the domains we are hosting because the current nameservers use a name from a previous business entity.
I was doing fine with the transfer until the VPS started going crazy on me. Apparently the VPS has a 1mil inode limit. This was an issue.
Now we have decided to go with a dedicated server. Currently the domains I have already transferred are pointing to the new nameservers which are both directed at the VPS.
Now I need to start moving accounts to the dedicated server which means the DNS zone records will not be on the VPS, but only on the dedicated box.
My question then is this:
If I change these domain's nameservers to the new hostnames is it possible to point one of the nameservers at the dedicated box and leave the other pointed to the VPS?
This way every zone record, whether it is on the VPS or dedicated box would be available, correct?
OR does the DNS server look at the first NS machine and if it receives any answer at all, such as "Domain doesn't exist", simply stop the lookup without checking the other NS?
I'm sorry this is so convoluted. If anyone knows a better way to go about this, please let me know. I'm on a limited timetable because the colocated servers will be turned off in a few days.
UPDATE: By the way, I have been testing and when I use nslookup on a domain that I've removed from the first NS it says "No answer" ... Will that cause a failover to another NS or cause the resolver to give up?