View Poll Results: Which is a better setup for DNS servers
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Centralized Clustered
2 50.00% -
Single Diversified
2 50.00%
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04-15-2012, 06:56 AM #1Web Hosting Evangelist
- Join Date
- Mar 2003
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- 470
DNS Server: Centralized Clustered vs Single Diversified
Sorry for the somewhat confusing title. My DNS setup right now is the latter, "single diversified" meaning, I host both the web server and DNS server on the same box per group of clients. For example:
Client Group A
NS1 and NS2 is hosted on the same box with the web server A
Client Group B
NS3 and NS4 is hosted on the same box with the web server B
and so on...
I am thinking of making a "centralized clustered" DNS server so that my setup would become like this:
NS1, NS2, NS3, etc. would be on geo-separated servers all containing the same DNS info and they will host the groups of clients at Server A and Server B, etc.
Now my question is, what are the disadvantages of the two setups? What I can think of right now is "centralized clustered" can be a single point of failure for DDoS attacks while "single diversified" isn't since only one group of clients will be affected in case of an attack. What you think?Last edited by mbr; 04-15-2012 at 07:09 AM.
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