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 Witness Disk mandatory?

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cshah1
Constraint Violating Yak Guru

347 Posts

Posted - 2012-04-04 : 17:31:26
when clustering SQL server 2008 R2 on Windows Server 2008 R2 does witness disk is manadatory?

Reason I have three node clsuter and want to use Node Majority only quorum model?

robvolk
Most Valuable Yak

15732 Posts

Posted - 2012-04-04 : 18:06:01
I don't believe it's mandatory, unless you don't have enough nodes for Node Majority.
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cshah1
Constraint Violating Yak Guru

347 Posts

Posted - 2012-04-04 : 20:34:41
Thanks.
I wanted to confirm as wih Windows 2003 you must need a witness.
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Sachin.Nand

2937 Posts

Posted - 2012-04-06 : 10:02:03
quote:
Originally posted by cshah1

Thanks.
I wanted to confirm as wih Windows 2003 you must need a witness.



I don't think that's true irrespective of whether it is Windows 2003 or 2008.

Node majority quorum relies on the number of nodes that up and running.If the no of running nodes are greater than the failed nodes the quorum is still running.

The witness disk is only required in a Node and Disk majority quorum model where the node as well the witness disk has a vote in maintaining the quorum.

After Monday and Tuesday even the calendar says W T F ....
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