Re: YAIQ - Yet another ignorant question: multiple LPARs.

John,

Your questions have been far from ignorant.

However, since I've never worked on a z, I don't understand where you
are coming from with regards to the SYSPLEX.

I can't imagine sharing data between Development/QA and Production.
How does that work?

The idea behind an LPAR is that its logically a separate machine,
certain hardware devices can be moved between LPARS, but for all other
intents and purposes an LPAR is just like a physically separate box.

LPAR concepts:
http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/rzait/rzaitconceptoverview.htm

As far as separate but shared....perhaps multiple DBs on a single
system might be of some use?
http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/rzahf/rzahfworkwithmultipledb.htm

It's a relitivly new feature, prior to its availablity a large shop
might have 3 separate machines (or LPARS) for Dev/Qa/Pdn. While a
small shop might simply use three separate sets of libraries
(schemas).

HTH,
Charles





On Fri, Dec 5, 2008 at 4:13 PM, McKown, John
<John.Mckown@xxxxxxxxxxxxxxxxx> wrote:

If/when we go from z/OS to an i, we plan to have three LPARs (probably
all on the same machine). The three will be: Production; Development &
QA; "sandbox" for software testing (OS and vendor, not application). On
z/OS we run these in a sysplex. That lets us safely share data directly.
I cannot see anything like this for the i. I get the impression that
data sharing on the i is done more like it is on UNIX or Windows. That
is, one system "owns" the data and if a job on another system needs
access to it, the I/O is done by the "owing" system and then sent
(TCPIP??) to the "requesting" system. I am aware that this is the method
that databases often use.

So, on an i, are the LPARs each separate with their own files, spool,
tapes, etc. What can be shared and how? A pointer to a manual would be
very appreciated.

Many thanks.

John McKown

Systems Engineer IV

IT



Administrative Services Group



HealthMarkets(r)

Administrative Services Group

9151 Boulevard 26 * N. Richland Hills * TX 76010

(817) 255-3225 phone * (817)-961-6183 cell

john.mckown@xxxxxxxxxxxxxxxxx * www.HealthMarkets.com



Confidentiality Notice: This e-mail message, including any attachments,
is for the sole use of the intended recipient(s) and may contain
confidential or proprietary information. Any unauthorized review, use,
disclosure or distribution is prohibited. If you are not the intended
recipient, please contact the sender by reply e-mail and destroy all
copies of the original message.




--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.