June 15, 2011 at 6:15 am
Hi there,
I am working an quorom selection en run into this(http://technet.microsoft.com/en-us/library/cc770620(WS.10).aspx).
Here I found a table with Quorum recommendations:
Description of cluster - Quorum recommendation
Odd number of nodes - Node Majority
Even number of nodes (but not a multi-site cluster) - Node and Disk Majority
Even number of nodes, multi-site cluster - Node and File Share Majority
Even number of nodes, no shared storage - Node and File Share Majority
Exchange CCR cluster (two nodes) - Node and File Share Majority
As shown above, Microsoft makes a distinction between single-site en multi-site environments for 'Node and Disk Majority' and 'Node and File Share Majority'
On this moment I am dealing with a multi-site environment, but the multi-site environment provides storage virtualisation. In my opinion, because of this storage virtualisation the gap between 'single-site / multi-site' closes. Storage is offered in a flexible manner becase the SAN (using SAN replication) enables storage failover that is transparent for the cluster. So I do have a multi-site environment, but with single storage.
Could any of you elaborate on the choice for 'Node and Disk Majority' and 'Node and File Share Majority' in relation to the single-site / multi-site environment as specified by Microsoft?
Does my choice for a 'Node and Disk Majority' quorum based on a two node cluster and my explination above a logical one?
Kind regards,
Dave
June 15, 2011 at 11:46 pm
How many nodes will be there ?
Distance Between Multi Site ?
Regards,
Syed Jahanzaib Bin Hassan
BSCS | MCTS | MCITP | OCA | OCP | OCE | SCJP | IBMCDBA
My Blog
www.aureus-salah.com
June 16, 2011 at 2:12 am
2 nodes.
Is distance really important? Ik could have a long distance with a short RTT and a short distance with a long RTT. I know this doesn't sound logical but still RTT, latence et cetera says more then distance alone....
June 20, 2011 at 1:10 am
Does my choice for a 'Node and Disk Majority' quorum based on a two node cluster and my explination above a logical one?
Yes
Regards,
Syed Jahanzaib Bin Hassan
BSCS | MCTS | MCITP | OCA | OCP | OCE | SCJP | IBMCDBA
My Blog
www.aureus-salah.com
June 20, 2011 at 1:20 am
Sayed thanx
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