New Nameservers on VPS?
 

Say you have a VPS account with nameservers ns1.example.com etc. Is it possible to ann new nameservers/ip address to the account. Basically, I'm looking to put a mainstream site on a VPS account which has an adult site, for obvious reasons, I'd like the nameservers/ip to be different.

You can ask your host for assigning your account with another IP, they are usually $1-$3/month each, depends on the host.

Thanks Denny. Presumably I can then add new ns to additional ip? Will send them a ticket :thumbsup

Why don't you just use DNS that is not hosted on your server? Just use Cloudflare's DNS which is consistently rated as one of the fastest DNS providers, or use HE or Rage. Godaddy, Namecheap, Namesilo all provide DNS just point them to your server's IP via records.

I've read that Cloudflare can slow things down quite a bit?

yes but still you could use your domain register's DNS... most of them are much better than these you create yourself (multiple geo locations, no single point of failure etc...)