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sql server clustering : 4 node 3 instance 64 bit cluster 32 gb of RAM



Joe
8/30/2007 3:08:03 PM
Quick question. After setting lock pages in memory.

Should we set the min and max memory.

Or
Do nothing

Or?



Thanks for any info.
Geoff N. Hiten
8/31/2007 9:47:47 AM
I have found that SQL 2005 machines in general like to have maximum memory
settings. There have been reports of performance issues when systems are
left without an upper bound for memory.

--
Geoff N. Hiten
Senior SQL Infrastructure Consultant
Microsoft SQL Server MVP




[quoted text, click to view]
Joe
8/31/2007 10:24:02 AM
In this situation I was thinking of setting max memory to say 30 GB. If
there was memory prssure due to a failover, I am under the impression that
SQL 2005 would release back to the OS and the OS would release to the failed
over instance of SQL server 2005.

[quoted text, click to view]
Krisnamourt via SQLMonster.com
8/31/2007 4:18:39 PM
Be careful!

Its not clear all sp_configure and baseline at all.

This two article show some problems to 64 bit:
http://support.microsoft.com/kb/918483/en-us

http://support.microsoft.com/kb/931279/en-us

Another question is:

If you have 4 node with 32GB, 3 instances, so the normal is one instance to
one node separated, but when happned failover cluster? I mean, one node could
stay with 3 instances, so the memory could be shared!

The best configuration is equal memory configuration or you can configure to
max(32GB) ,but trigger some procedure to change sp_configure min and max
memory to another issue when happned failover.

[quoted text, click to view]

--
Message posted via http://www.sqlmonster.com
Geoff N. Hiten
8/31/2007 9:05:58 PM
That is an incorrect assumption. Windows and SQL will not balance memory
amongst multiple instances.

--
Geoff N. Hiten
Senior SQL Infrastructure Consultant
Microsoft SQL Server MVP




[quoted text, click to view]
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