RE: LPARs

["Haase, Justin C." <justin.haase@xxxxxxxxxxxx>]

Al - why do you say 00 is HMC?  With the recent announcement where you
can slice a small 520 into one i5/OS LPAR and up to 3 (or is it 4?)
Linux partitions, you don't need an HMC.  Therefore the partition
defining ether and disk for the virtual Linux partitions is not the HMC,
it's the only i5/OS partition on the up to that point single-image
system.  That's one example.  Second follows.

It's hasty and plain wrong to say the HMC is equal to a primary
partition, because it's not.  It is depended upon to get the hardware
defined and started at initial setup, as well as controlling CoD and
DLPAR,  but once the box is up and running, you can disconnect the HMC
all you want and the system will stay running.  In fact, I upgraded the
firmware from 4.4 to 4.5 on one of mine in the middle of the day.  Not
so with a primary partition.  

You don't need the HMC to run a box throughout the business day, but you
do need a primary - else the rest of your machine would go down.

HMC is fantastic.  Plus, it's getting better all the time.  And from all
I've read, experienced, and implemented, it's most definitely not the
"new" primary partition.

Once again - I say FSP = 00.  HMC just controls the FSP which in turn
controls the box.

Justin C. Haase - iSeries System Administrator
IBM Certified Systems Expert - eServer i5
Kingland Systems Corporation
email - justin.haase@xxxxxxxxxxxx
 

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Al Barsa
Sent: Wednesday, June 15, 2005 9:51 PM
To: Midrange Systems Technical Discussion
Subject: Re: LPARs


It doesn't affect non-LPARed systems, unless you are using the LPAR
APIs, which would only be a masochistic act.

Partition 00 on i5 is the HMC.  (As I said two days ago, it clearly
absorbs.)

Al

Al Barsa, Jr.
Barsa Consulting Group, LLC

400>390

"i" comes before "p", "x" and "z"
e gads

Our system's had more names than Elizabeth Taylor!

914-251-1234
914-251-9406 fax

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             "James H H

             Lampert"

             <jamesl@xxxxxxxxx
To 
             om>                       midrange-l@xxxxxxxxxxxx

             Sent by:
cc 
             midrange-l-bounce

             s@xxxxxxxxxxxx
Subject 
                                       LPARs

 

             06/15/2005 05:29

             PM

 

 

             Please respond to

             Midrange Systems

                 Technical

                Discussion

             <midrange-l@midra

                 nge.com>

 

 





It's recently been brought to my attention that in the latest releases,
the default LPAR is now 01 instead of 00.

Can somebody please explain the what, when, how, and why of this, and/or
how this affects non-LPARed systems?

--
A very puzzled JHHL
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