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From Rafael Weingärtner <rafaelweingart...@gmail.com>
Subject Re: Contradictory host configuration guidance in docs.
Date Mon, 28 Sep 2015 21:44:41 GMT
If you are thinking on using Xen, this link might provide you with some
clarification about CPU requirements.
http://support.citrix.com/article/CTX123491?_ga=1.929334.668244781.1422273077

As far as I understand, when creating a cluster you should match CPUs. The
amount of memory in each host does not need to match.

On Mon, Sep 28, 2015 at 6:38 PM, Ron Wheeler <rwheeler@artifact-software.com
> wrote:

>
> http://docs.cloudstack.apache.org/en/master/concepts.html#what-is-apache-cloudstack
> In "About Clusters" it says:
> "The hosts in a cluster all have identical hardware, run the same
> hypervisor, are on the same subnet, and access the same shared primary
> storage."
>
> Later in the "About Hosts" it says
> "May have different capacities (different CPU speeds, different amounts of
> RAM, etc.), although the hosts within a cluster must all be homogeneous".
>
> The use of "identical" and "homogeneneous" to describe hardware is
> confusing.
> IMHO you don't have "identical" hardware if you have different "CPU
> Speeds" and "different amounts of RAM" and different "etc."
>
> What exactly should be said about Cluster hosts? Is it sufficient to have
> the same CPU family?
> How far can you stray in the same family?
> Can a host with an AMD Opteron 6300 be in the same cluster as one based on
> the AMD Opteron 6200?
>
> Is there any way to clarify these 2 sections on the same page and replace
> "identical" and "homogeneous" with a clearer description of what is
> required.
> The cluster comment in the Host section should probably be removed or
> replaced with a reference to About Clusters to avoid having duplicate  and
> possibly conflicting information.
>
> Ron
>
>
> --
> Ron Wheeler
> President
> Artifact Software Inc
> email: rwheeler@artifact-software.com
> skype: ronaldmwheeler
> phone: 866-970-2435, ext 102
>
>


-- 
Rafael Weingärtner

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