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Physical vs Virtual Machine performance Questions

Posted on 2014-01-27
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Last Modified: 2014-02-03
I have a client with a 2012 server that is hosting a fair number of business apps, and application performance is now becoming an issue.

Would it make any difference what so ever, to spin up a couple of 2012 VM's on this machine, and run a couple of the apps off of those instead of having all of them on the physical machine?
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Question by:tjwo94
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To determine that, you need to get to the bottom of the performance issue. Is it because of server resources? If so, your server is overcommitted, so definitely don't run any more services on it. You should add a server, physical or virtual, but on another machine, and move some applications to the new server.
Is it because of application conflicts and there are ample physical resources to run them? Then, "maybe" you could install and run Hyper-V, but I don't think Windows Server is the most efficient VM host. (This begs the question "Why wasn't VMWare deployed on the physical server?")

Have you run perfmon over a period of time to check resource availability? If not, that's a must.

What kind of applications are we talking about? Web apps, SQL, SAP etc.?
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If you have lots of IO on this server due to the apps, you should also investigate a potential network bottleneck.
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by:tjwo94
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Thank you for the info. Clearly after monitoring resources, this disk are just being pounded with read/write. We are going to offload some apps to another server to alleviate the issue.
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Glad I could help!
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