Re: VMotion as failover solution

  • From: Paul Drake <bdbafh@xxxxxxxxx>
  • To: Brandon.Allen@xxxxxxxxxxx
  • Date: Wed, 14 Dec 2011 13:55:46 -0500

One unexpected "bonus" in this area is - if "Advanced" was licensed for
ESX/ESXi v4.x ... that can be converted to "Enterprise" for ESXi v5.x.
The downside is if the host in which ESXi is installed has 2 sockets but
say 96 GB of physical memory, the "Enterprise" license will only cover 32
GB vRAM per socket/processor license.
So one may gain features but have less memory to support the existing VMs
out of a "free" upgrade from "v4.x Advanced" to "v5.x Enterprise".
This could end up resulting in an additional "Enterprise" license being
required per pair of sockets in order to support the 96 GB of memory in
that host.
"Its a win win!" </sarcasm>

That's one way of dealing with ever-increasing processor core counts.

On Wed, Dec 14, 2011 at 11:39 AM, Allen, Brandon

> I think that's almost right except that vMotion itself doesn't provide
> automatic failover - you need their HA product specifically for that and
> from my understanding they consider vMotion and HA to be two separate
> things although they may be bundled together depending on what package you
> buy.  The diagram at the link below shows that vMotion is included with
> "vSphere Standard", but you have to buy "vSphere Enterprise" to get their
> "High Availability" and "Fault Tolerance" products:
> Here is another link that might help clarify the differences:
> You'd probably be best speaking with one of their sales people (and have
> them include a tech resource too if possible) to get the details for your
> specific situation.
> Regards,
> Brandon
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