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SQL Server clustering : Quorum arbitration process

Posted on 2012-04-02
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Last Modified: 2012-04-26
Hi,
Can someone explain in plain english how quorum arbitration process works under MS SQL server?
Please don't paste MSDN links.

Thanks
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Question by:crazywolf2010
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by:Joe Klimis
ID: 37795476
Hi

this is a mechanism to prevent split brain ( bother servers in a failover cluster becoming active at the same time) , when they loose contact with each other..  For the cluster node to be active / "live" then it requires two votes to be promoted to active , or to stay active. one from the host , the other from the quorum disk.

I hope this helps
Joe
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by:crazywolf2010
ID: 37795489
Hi Joe,
I read about  split brain situation. How this is resolved under Sql server 2008? How are resources managed thru Quorum?
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Author Comment

by:crazywolf2010
ID: 37827374
Any update on this query please?
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Joe Klimis earned 2000 total points
ID: 37831580
Split brain is not resolved by SQL 2008  its a windows feature not a SQL one.

This artical explains how the cluster the quorum workis

http://sqldbpool.com/2010/05/21/split-braintiebreaker-in-cluster/

The quorum uses only a small disk for resource.  You basically set it up in when u create the cluster and requires no management.

I hope this helps

Joe
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