|Art Alexion on 22 Sep 2010 08:55:39 -0700|
On Wed, Sep 22, 2010 at 5:54 AM, Casey Bralla <MailList@nerdworld.org> wrote:
In the world of VM, poor performance often presents itself in unexpected ways.
We run into this problem at work a bit. Some co-workers think they are *simplifying* things by virtualizing everything. On smaller networks, they take a single "cheaper" server and create on it a separate VM for each server role. Mostly, this is totally unnecessary. What they don't think through is that instead of running those services on a single OS sharing resources, they are introducing a host layer, and multiple OS instances running concurrently on the same single piece of hardware. Even before adding the roles to the VMs, you have a lot of overhead, so you really have to think about whether separate servers are necessary or even add anything positive. VM technology is a great way to save money when you would definitely need separate boxes without it. Too many people see it as a way to segregate things unnecessarily, just because they can.
I know *nothing* about apache, but if you don't need all of the VMs, ditch them.
If I understand the curreent price structure ESXi is still free. You need a license, but you don't have to pay for it. I defer to Lee for the definitive answer.
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