Re: Cluster splitting
- From: "John Toner [MVP]" <jtoner@xxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 31 Mar 2006 22:42:04 -0500
While MNS can be used in a geographically dispersed cluster, it is not
required for a geo-cluster. Personally, I would not recommend considering a
MSN quorum in a geocluster unless you had a 3rd site in the picture. For
Windows 2000, obviously there is no MSN and there are certainly supported
geo-cluster solutions for W2K.
There are different kinds of geographically dispersed clusters. It sounds
like you are considering a "stretch" cluster rather than a geographically
dispersed cluster. A true geo-cluster would use a replication technology to
synchronously copy data between storage arrays between sites.You will always
need to get a third party involved to accomplish this type of cluster.
For stretch clusters, you would simply have an ISL between sites or some
other mechanism to stretch your SAN between sites. This is certainly doable
and supported.
Regards,
John
"Bernard Cheah [MVP]" <qbernard@xxxxxxxxxxxxxxxxxxx> wrote in message
news:u9t$5nGVGHA.328@xxxxxxxxxxxxxxxxxxxxxxx
Thanks. I read about MNS and new stuff with W2k3 clustering.latency,
However, the current environment is fully w2k based and from the KB.
- round trip below 500ms
- quorum this must be replicated
For same building - same vlan setup should not have more than 500ms
what about the quorum this? I'm planning to have both nodes connect to thethis
same SAN, via FC of coz.
in a way - it would be same as both nodes are sitting in the same data
center. make sense to you?
--
Regards,
Bernard Cheah
http://www.iis-resources.com/
http://www.iiswebcastseries.com/
http://msmvps.com/blogs/bernard/
"Ryan Sokolowski (MVP)" <ryan@xxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:%23aKJQBEVGHA.1564@xxxxxxxxxxxxxxxxxxxxxxx
Sure thing...good topic and question. While one of my felow MVPs (John
Toner) is much more the Geo-Cluster guy than I am, I'll try to screen
Dispersedone for you...
You're referring to a Majority-Node Set (MNS) or Geographically
http://www.microsoft.com/windowsserver2003/techinfo/overview/clustergeo.mspxCluster (Geo-Cluster) and there is lots of good guidance on how to
implement and architect this particular configuration (which is
significantly different from the traditional Quorum-Disk based cluster
model).
Also please note that you must pay particular attention to the Windows
Server Catalog as it concerns supported hardware/configurations.
Start here (even though you said it's W2K, not W2K3):
Geographically Dispersed Clusters in Windows Server 2003
Windows clustering and geographically separate sites
http://support.microsoft.com/kb/280743
The Microsoft support policy for server clusters, the Hardware
Compatibility List, and the Windows Server Catalog
http://support.microsoft.com/kb/309395
These should get you started...hope this helps,
--Ryan
--
--
Ryan Sokolowski
MVP - Windows Server - Clustering
MCSE, CCNA, CCDA, BCFP
"A troubleshooter's best tool is the Event Viewer and understanding the
events and messages contained therein."
This posting is provided "AS IS" with no warranties, and confers no
rights.
"Bernard Cheah [MVP]" <qbernard@xxxxxxxxxxxxxxxxxxx> wrote in message
news:%23KYeD$7UGHA.5364@xxxxxxxxxxxxxxxxxxxxxxx
Can anyone point me to any reference doc for splitting or extending the
MSCS to two different building?
I'm looking at different buldings and different sites setup.......
Oh ya, this is w2k. not w2k3.
--
Regards,
Bernard Cheah
http://www.iis-resources.com/
http://www.iiswebcastseries.com/
http://msmvps.com/blogs/bernard/
.
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