RE: LPAR for testing on a relatively small machine?

["Pete Massiello" <pmassiello-ml@xxxxxxxxxxxx>]

You don't need to worry about multiple controllers as the M25 is a power6
processor, and it can do virtual LPARS.  This means, that an IBM I partition
on 6.1 or later can host another IBM I partition at 6.1 or later.  It's
extremely simple to do ( I gave a presentation on this earlier this week at
COMMON Europe) and the only thing you need is an HMC if you have a Power6 or
Power7 machine, and both your hosting and hosted partitions can be either
6.1.x or 7.1.  I have been building these for my customers now for the past
year and they work great.

	Pete

--
Pete Massiello
iTech Solutions
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-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Neeraj J
Sent: Friday, June 18, 2010 4:36 AM
To: Midrange Systems Technical Discussion
Subject: Re: LPAR for testing on a relatively small machine?

Are those 12 disk on same controller or different ?

On Thu, Jun 17, 2010 at 10:25 PM, Lennon_s_j@xxxxxxxxxxx <
lennon_s_j@xxxxxxxxxxx> wrote:

> Can we create an LPAR for testing on a relatively small machine?  Any
> thoughts from hardware experts would be appreciated, before we starting
> digging into the manuals...
>
> Here's the picture:
>
> We have a 520 M25 running V6R1, 1 processor, 16GB memory with plenty of
> spare CPU time.
>
> We have 12 4328 disk units at Raid 5.  8 are 120mb, 4 are 100mb, for
> over 1 TB of space.  We could devote 25% of this to a test LPAR.
>
> I believe we could share the CPU so that the existing production
> partition would rarely be impacted (it would always get priority for
> cycles).
>
> But can we realistically split up 12 drives so that 25% goes to a new
> LPAR?  For continued production performance I think we'd want production
> data spread across all 12 units.
>
> Back in a former life on an earlier OS with much bigger machines, IIRC
> we needed a separate disk controller for each LPAR, but I was much
> further removed from hardware nuances then.  (I'm still not all that
> close...)
>
> Thanks,  Sam
>
> --
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