I could really use the help and advice of someone knowledgeable who has been through the experience of growing from one server to multiple servers. I'm trying to expand my small hosting company by adding new servers and eventually getting rid of my oldest server which is kind of like the "master" server right now, and there are a few things that I'm very unsure about - mainly DNS. I'm hoping that someone here will take a few minutes to read about my current setup and hopefully point me in the right direction. I'll start by explaining my current setup, and then my goal, and hopefully it will make enough sense to someone here that maybe your response will make sense back to me. My current situation / setup: I have 2 dedicated servers. The first one, I call the "master" box, because it is basically the DNS brain plus has customer accounts on it. I have two nameservers registered for it, so it's like this: Hostname - mainbox.example.net Nameserver 1 - ns1.example.net / 123.456.789.123 Nameserver 2 - ns2.example.net / 123.456.789.124 RHEL 4 The second box is just one that I've "added on" via the DNS Clustering feature in WHM. It does not have it's own nameservers, I guess it just shares the DNS Zones with the "master" box, so it's like this: Hostname - secondbox.example.net Nameservers in Basic WHM setup are set that same as they are on the "master" box. The main problem with this arrangement is that if "mainbox" goes down, so does "secondbox", because it relies on mainbox for DNS since I only have to nameservers registered. My goal: - I'd like to add a third and fourth box to the DNS cluster, and get rid of "mainbox" and let the new box take over it's role. - I'd like register more nameservers, like ns3.exmaple.net and ns4.example.net, and find a way to set things so that if one box fails, the accounts on the other box still remain live. Basically, I want to expand to have multiple servers all under the same company domain like example.net, with a failover DNS setup so that I can just continue to add more boxes and not have all of them go down if a "master" server goes down. So a few of my questions are: - For starters - should I register ns3.example.net and ns4.example.net and assign them two IP's from the "secondbox.example.net", OR should I make it so "mainbox.example.net" has IP's for NS1 and NS3, and then "secondbox.example.net" has NS2 and NS4? - When I add a third box, "thirdbox.example.net" and then DNS Cluster it through WHM on "mainbox.example.net", how can I finally safely get rid of mainbox? Would it be by registering the NS1 and NS3 to two IP's on "thirdbox.example.net" and then transferring all of the accounts from mainbox over to thirdbox, and then shutting down mainbox? I'm really confused as to where to go from here. I need to have at least two dedicateds running, but it's time to get rid of that original "master" or "mainbox" because it has begun to experience problems that nobody has been able to resolve at my data center. If anyone has taken the time to read this - thank you VERY much. If anyone can point me down the correct path / method for expanding to more servers and get rid of the old "main" one, I would be forever in your debt. I have contacted a few consultants whom I trust very much, because I would be willing to pay what I can for some help with this, but they're too booked up to help me. Can anyone please help me figure out the right way to go about this, so I can try to expand grow my small hosting business? Thank you, sincerely.