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 Putting all my DB on one resource heavy VM OR NOT

Author  Topic 

shebert
Yak Posting Veteran

85 Posts

Posted - 2012-04-12 : 11:37:28
Hi all
here is the situation, i have three main db engineering, ERP and contractors. these servers are between 3-6 years old.

we have several C# webtools and ssis reports that can pull massive data from all three servers.
i have used indexing and remote procedure calls to make them bearable.

MY QUESTION IS:
I am planning to get Two or Three massive new servers, cluster them with windows 2008 r2 and setup virtulization.
given all the other server i must virtualize only one of the two/three servers will be used to host virtual sql servers.

Is it better to setup three seperate virtual DB servers on one of the new machine
OR

setup ONE DB server Vitrual containing the databases from all 3 physical db

OR

setup ONE DB server Vitrual, containing three instances of sql server for the 3 physical db

Any thoughts would be appreciated..

Steve

Zar Shardan
Starting Member

5 Posts

Posted - 2012-04-18 : 07:00:53
Putting all 3 DBs on a single DB server instance will probably save you a few GBs of physical RAM (no need to host 2 extra instances of OS and DB Engine code) and will allow SQL Server to better handle peak loads in all 3DBs granted these peaks do not coincide very often. On the other hand in this scenario said load can affect the other 2 DBs (reduced performance) so you would need to keep that in mind.

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