Re: clustering question

I agree with Jeff. MNS requires 3 nodes because the nodes use a voting
mechanism to determine what's on line. (Thus Majority in the MNS name.)
--

DatabaseAdmins.com
--Remote DBA Services


"Jeff Hughes [MSFT]" wrote:

Actually, MNS requires at least 3 nodes and you can have up to 8 in 2003.
You can setup a 2 node cluster as MNS but a failure of one node will cause
the failure of the other.

There's some good articles on MNS on this TechNet site.

http://technet2.microsoft.com/WindowsServer/en/library/e70333db-5048-4a56-b5a9-8353756de10b1033.mspx?mfr=true

--
Jeff Hughes, MCSE
Support Escalation Engineer
Microsoft Enterprise Platforms Support (Server Core/Cluster)

"Rodney R. Fournier" <rod@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:B5C97933-06F1-4AAE-B3D4-7CAC33ABBB8C@xxxxxxxxxxxxxxxx
MNS currently only works on a 2 node cluster (that will change in the
future with Longhorn). More answered below...

Cheers,

Rodney R. Fournier
MVP - Windows Server - Clustering
http://www.nw-america.com - Clustering Website
http://msmvps.com/clustering - Blog
http://www.clusterhelp.com - Cluster Training
ClusterHelp.com is a Microsoft Certified Gold Partner

"Steve Waugh" <help4u@xxxxxxxxx> wrote in message
news:%23lzuJ4LZHHA.3628@xxxxxxxxxxxxxxxxxxxxxxx
I am trying to learn and test clustering using windows 2003 enterprise
edition and currently just an MSA 500.


Cool, great hardware. HP is an excellent resource and they will answer
most any question you have.

What I want to understand is....should I be using MNS or the physical
disk as the quorun resource...from what I understand it seems that if you
have a 2 node cluster you should use the physical disk as the quorun
resouce and if its a multi node cluster you should use MNS.


If you want to avoid a single point of failure with regards to your Quorum
drive - yes.

Also I did not set up MNS right at the start ? I used the physical disk
as my quorum resource ( shared disk) , how do I revert back to MNS ? any
easy way ?

Not a problem, you can switch to MNS after the fact. Easy
http://msmvps.com/blogs/clustering/archive/2006/07/09/Majority-Node-Set-_2800_MNS_2900_-with-only-2-nodes_3F00_.aspx


is this a good link ?

http://technet2.microsoft.com/WindowsServer/en/library/d58091c1-f31e-46ec-b7e1-40751add28a71033.mspx?mfr=true

No really the complete story, see the link I posted above.



I am still a little cofused as far as setting up groups are concerned...i
set up a cluster group and a MSDTC groups for SQL 2005....the MSDTC group
now owns the shared disk resource instead of the cluster group...is this
normal ?

I can answer that it depends. See
http://msmvps.com/blogs/clustering/archive/2004/10/25/16672.aspx


Finally what is this stuff about the file share wintness....are people
using it in production ?


We are using it on 14 clusters currently. I love it, works great.

Any help will be appreciated...
thanks !

-SW




.

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