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Exchange 2007 clustering..

Posted on 2011-09-15
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Last Modified: 2012-05-12
Hi,
I am going to install Exchange 2007 in new branch office. This server would run with 500 mailboxes and i want to build it in clustering but got confused when reading clustering on technet since there are multiple types of clustering available.
So please let me know
1. Which type of clustering would provide me maximum availability/uptime.
2. What are the requirement for that, software and hardware both.
3. How to install and configure it.
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Question by:pdixit1977
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by:sighar
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Why not go for Exchange 2010? It offers great high availability with CAS arrays and DAGs with just two servers.
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by:pdixit1977
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I actully dont need CAS array,
I m new for clustering so please explain DAG in simple words to me
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sighar earned 125 total points
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DAG stands for  Database Availability Group and is a feature to have a database copy ready on another server. There's synchronization between a active copy and a passive copy (actually, you can have up to 16 copies per database) and failover happens in mere seconds. It's a sort of clustering except the DAG wizard does it all for you. You create a DAG and put the mailbox databases as members on different servers. You don't get higher availability :-)

Check these links out for a better and more detailed (but simple) explanation:

http://www.exchange-genie.com/2009/04/database-availability-group-dag-exchange-2010/

http://www.msexchange.org/articles_tutorials/exchange-server-2010/high-availability-recovery/uncovering-exchange-2010-database-availability-groups-dags-part1.html
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by:pdixit1977
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thats a really good feature but the license we have is E2K7 Enterprise edition so i have to go witn E2K7 only :(
I dont have any storage device (SAN/NAS) have 2 servers only so which type of cluster will provide me  best availability in E2K7 ?
In near future we dont have any expension plan so actually i can say only 1 active and 1 passive node i want at this moment.
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by:pdixit1977
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I have 1 license of E2K10 standard edition, does 2010 standard edition support clustering with DAG ?
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by:Akhater
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you can have DAG running on exchange 2010 standard however you will need Enterprise version of windows
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by:pdixit1977
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thanks akhater for confirmation.
I asked 3 question in this thread which is wrong i believe so i am going to open 2 separate questions and leaving this thread only for decision of type of cluster.

So exchange 2010 standard edition will suffice my cluster requirement ?
do i need separate exchange 2010 standard edition license for all nodes (active & passive) OR i would need license for active nodes only ?
currently my mailboxes running on Exchange 2003 so can i directly move them on Eschange 2010 ?
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by:Akhater
Akhater earned 125 total points
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So exchange 2010 standard edition will suffice my cluster requirement ?
as long as you are running Enterprise windows yes 2010 standards is enough for DAG (up to 5 dbs)

do i need separate exchange 2010 standard edition license for all nodes (active & passive) OR i would need license for active nodes only ?
yes one license per node

currently my mailboxes running on Exchange 2003 so can i directly move them on Eschange 2010 ?
yes no problems
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Author Comment

by:pdixit1977
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Everything seems good except licensing part :(

Anyways thanks for your support and shared info..i will definately go with E2K10

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Author Closing Comment

by:pdixit1977
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thanks for your support
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