[et-mgmt-tools] Xen 'production' services - are we there yet?

[Aaron Lippold]

I totally agree that planning is a big issue - as always. I guess the
tipping point for an overall win is still, as you said, in
deliberation.

On 10/23/07, Tom Georgoulias <tomg at mcclatchyinteractive.com> wrote:
> Aaron Lippold wrote:
> > What's the one line ROI then to the
> > management in your opinion?
>
> IMO the one line ROI is "The jury is still out."
>
> There are definite pros/cons with virtualization and whether or not it
> saves you money and/or improves your system platform really depends on
> what you are doing now, how you implement virtualization, and what the
> expectations are.
>
> You certainly need beefier servers (more RAM, CPUs, etc.) if you plan to
> run multiple VMs, and since you are probably going to be asked to use
> fewer servers then the servers you do use will need to be pretty
> robust/dependable.  That costs money.  Also, taking one physical server
> offline actually takes multiple virtual servers offline, which means you
> need either flexibility in scheduling maintenance outages (or patience
> from users when you have system crashes) or rely upon the migration
> capabilities of VMs.  If migrations are the answer, then the storage
> component is really critical because you need some shared storage
> technology (like SAN) that all of your physical servers have access to.
>
> All of this stuff takes planning and consideration, and getting the
> design right is important.
>
> Tom
>
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