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From David Nalley <>
Subject Re: [Doc] Missing hardware requirements in KVM install section?
Date Wed, 17 Oct 2012 16:20:41 GMT
I doubt I am adding clarity, but comments are inline.

On Wed, Oct 17, 2012 at 12:12 PM, Jessica Tomechak
<> wrote:
> Just noticed that in the KVM installation section, which was not just
> converted to XML but substantially rewritten by a contributor, the
> following hardware requirements from the older guide were omitted. Can
> anyone please confirm whether these still apply to Apache CloudStack 4.0?
> Hosts must be certified as compatible with the selected operating system.
> For example, see the RHEL Hardware Compatibility Guide at

Since you can use this in virtually any modern KVM system (Ubuntu,
Fedora, in addition to RHEL etc) the above would seem to be pointless.

> Must support HVM (Intel-VT or AMD-V enabled).

That's a KVM requirement. KVM won't work without this.

> Within a single cluster, the hosts must be homogenous. The CPUs must be of
> the same type, count, and feature flags.

This is true -  might also add network layout as that is more
important that feature flag and count of CPUs IMO.

> Within a single cluster, the hosts must be of the same kernel version. For
> example, if one host is RHEL6 64 bit, they must all be RHEL6 64 bit.
> 64-bit x86 CPU (more cores results in better performance)

The above wording is horrendously unclear and confusing at best.
RHEL6 always ships with 2.6.32 - but there are different builds and it
makes me question whether you mean:

I must be using the same major version of RHEL and match arch
I must be using the same minor version of RHEL and match arch
I must be using the same kernel release and arch on all machines
(e.g.: kernel-2.6.32-279.5.2)

> Hardware virtualization support required

You said this already

> 4 GB of memory

Where did this number come from?

> 36 GB of local disk

Why is this needed? Where did this number come from? What if they are
all pxe-booted diskless KVM nodes (we have people who have done that)

> At least 1 NIC

> Statically allocated IP Address

I thought Edison said we deprecated the need for this many months ago.

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