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SQL Server 2008
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Multiple Instances vs. Multiple DBs on one...
Multiple Instances vs. Multiple DBs on one instance
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dan-572483
dan-572483
Posted Wednesday, November 07, 2012 10:33 AM
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Last Login: Friday, June 14, 2013 3:11 PM
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If you have two beefy 64-bit servers in 2-node cluster, and several applications that need a database server, is it generally better to install multiple instances, or deploy databases for multiple applications on once instances.
I would think you would use two instances when different applications require a different version/edition of SQL Server, or different server-level configuration settings, you'd install multiple instances.
But if all the applications support the same edition/version of SQL Server and default server level settings, then I would think that one instance would offer the most efficient use of storage and memory.
Am I right?
Post #1382081
DiverKas
DiverKas
Posted Wednesday, November 07, 2012 10:54 AM
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dan-572483 (11/7/2012)
If you have two beefy 64-bit servers in 2-node cluster, and several applications that need a database server, is it generally better to install multiple instances, or deploy databases for multiple applications on once instances.
I would think you would use two instances when different applications require a different version/edition of SQL Server, or different server-level configuration settings, you'd install multiple instances.
But if all the applications support the same edition/version of SQL Server and default database level settings, then I would think that one instance would offer the most effient use of storage and memory.
Am I right?
1 instance uber alles. It jsut doesnt make sense to do it any other way, if you dont have to support server versioning.
Post #1382090
GilaMonster
GilaMonster
Posted Wednesday, November 07, 2012 11:52 PM
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It depends. There are good reasons for each alternative and not enough information to say which is better.
Gail Shaw
Microsoft Certified Master: SQL Server 2008, MVP
SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass
Post #1382279
dan-572483
dan-572483
Posted Thursday, November 08, 2012 9:31 AM
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Last Login: Friday, June 14, 2013 3:11 PM
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In this case all applications will support the same edition/version/patch level. No conflicting instance-level settings are needed and Transparent Data Encryption will not be used. I'm also confident security can be designed to keep vendor support out of other vendors' DBs.
What other factors would make multiple instances a better choice?
Post #1382580
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