Side note...... We are adding 2 CP engines to our z10 next week. I *believe* we can vary these engines onto VM without an IPL. Someone very knowledgeable told me he was 99% sure that would work. :-) Anyone out there know differently? (We currently are using 6 of the existing engines on the box. Our hardware folks will 'activate' 2 more....)
From: Alan Altmark/Endicott/i...@ibmus
To: IBMVM@LISTSERV.UARK.EDU
Date: 01/05/2010 10:33 AM
Subject: Re: 2 to 3 IFLs
Sent by: The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU>
On Tuesday, 01/05/2010 at 12:25 EST, "Harris, Nick J."
<nhar...@txfb-ins.com> wrote:
> According to our performance product we do NOT need an additional IFL at
this
> time but it was included as part of the z10 upgrade so I wanted to
utilize it.
It will be utilized even though you do not define three *virtual* CPUs. CP
will be able to run three virtual CPUs at once instead of only two. With
virtual 2-ways, you ensure that no single guest is using all three CPUs at
the same time.
Alan Altmark
z/VM Development
IBM Endicott
