3 Domain Controllers... how should they be set up

dariena · 2010-12-29T10:43:31.000Z

I’ve seen varying articles on this and I’m curious as to what the general consensus is.

We currently have 3 domain controllers (overkill for our current size for sure but it is what it is) all 3 our currently global catalogs.

I was told that all 3 should rotate in terms of primary and secondary DNS. 1 should point to 2 as its primary and 3 as its secondary. 2 should point to 3 as its primary 1 as its secondary, etc…

But based on a conversation in another thread here where someone is having problems with their secondary controller the consensus seems to be that DC’s should point to themselves as their primary DNS? Does it matter where they point to as their secondary?

tim7139 · 2010-12-29T10:46:59.000Z

MS recommended best practice is for all DCs to use themselves for primary DNS.

Secondary DNS should be set based on highest availability and highest access speed. This may leave you with multiple DCs using the same secondary depending on your topology and equipment.

librarian · 2010-12-29T10:48:40.000Z

Microsoft recommends that in most scenario’s a DC use itself as the primary DNS and another DC as the secondary.

edit
Darn… yeah, what he said.
/edit

dariena · 2010-12-29T10:52:08.000Z

Thanks again!

Is there a best practice for DC’s doc? I’ve looked for it in the past and been unsuccesful…

tim7139 · 2010-12-29T12:31:00.000Z

Take a look under technet - active directory best practices,

christophero · 2010-12-29T14:26:12.000Z

Don’t have the links right now, but I’m pretty sure they’re buried here on Spiceworks somewhere (there are a few threads where Martin9700 and I argued about it!), but there are some docs where MS recommends one way, and other docs where they recommend the other way.

tim7139 · 2010-12-29T14:36:59.000Z

Mark Minasi is quite consistent in his book and training materials.

I don’t ever recall seeing an MS doc saying not to use local DNS, but I recall a few saying not to use a secondary at all. Kind of in the same vein as only using DHCP for servers.

mahmoudiraqi · 2014-08-22T01:02:38.000Z

i have a problem . when i find my website on google,i will see my old website.

how to modify it ??

i have 3 domains.the first domain is my old website.

how to get my second domain is the main domain to when i find my website on google,will see the new website

And thanks