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Replication

terrorbyte
terrorbyte asked
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Last Modified: 2010-03-06
Hi,

I have to add a new exchange server to my domain for redundancy and hopefully speed improvements.

Currently have Exchange 2003 enterprise installed on a windows 2003 std edition. exactly the same is installed on the other server.

I have read that DNS round robining can help me here to let the 2 machines work together as a "mirror server" of each other if you can call it that.

How do i enable replication between the 2 servers so that they "look alike" and to give me a redundant solution, if one dies the other takes over and so on.

I have heard and read numerous things on clustering and it sound like a done deal and will work brilliant for me, the problem is i dont have server 2003 enterprise and the budget will not buy it, so i have to make do with 2003 std and other ways to get this problem sorted and my 2 servers to work.

Please help.
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Commented:
DNS round robin will not do what you want.

You either want clustering or something like doubletake or neverfail.  As you do not have the budget for clustering, look into the alternatives.  Even then prices start at about $3000, and I am almost certain you need another exchange license as well.

-red

Author

Commented:
From what I understand if you have two servers exactly the same , replicated and up to date, and with your dns working to the T it should work without a cluster.
http://www.petri.co.il/load_balancing_exchange_front_end_servers.htm

Remember in my case here, CLUSTERING, is NOT an option. Any way how do i set up replication on exchange? That is my main query.
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Commented:
There is no native mailbox replication in exchange without a cluster.  Period.

The only thing there is as far as replication goes is Public Folder replication - but this is not what you want.

That guide you linked to is for FRONT END servers - which do not contain mailboxes, making it once again something that you do not want.

The ONLY options you have for mailbox replication are; clustering, or, a 3rd party solution like DoubleTake or NeverFail.

-red

Author

Commented:
mmm....

This is a real pain. Ok then next option if i can get hold of Windows 2003 ent edition, how safe is it to upgrade my windows 2003 std edition so that i have the clustering options?

Aint there a hack to make 2003 std able to do clustering?

Author

Commented:
Another Question :

If I have 2 exchage machines reading and writing to the same store that is residing on a Disk Array , and DNS round robins between the 2 exchange machines is this possible?

Is it possible for the 2 exchange machines to read and write to the same database/store at the same time?
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Commented:
>>Is it possible for the 2 exchange machines to read and write to the same database/store at the same time?

Yes, that is a cluster.

Author

Commented:
Hi,

So if i decide to have both the exchange machines read and write to a store that is on my SAN storage that would work? no need to setup clustering on windows.

And then i can round robin the dns to the 2 exchange servers.
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Commented:
No, you can't do that.

I am trying to be as clear as I can here - what you are trying to do is impossible unless you use a cluster or a 3rd party application.

-red

Author

Commented:
ok.

All i am looking for is to make exchange faster and reliable.

If what i have cant work, then i might aswell cancell my project.

Thanks for all the help, you cleared out a 2 week debate and reading forums.
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Commented:
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