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

Hi John

Like Charles, I don't really understand what a sysplex is or does, but the
only environment I can think of that would be close to what you want to do
is one built using IASP's.

Each IASP is a separate database but they share the spooling subsystem,
security configuration, devices etc. Data can be moved or shared between
databases (with some restrictions); it's just another set of libraries on
the machine in a file system that can be mounted and unmounted as required
to make it available or not.

This may give you something additional to investigate or ask questions about
at the very least.

Regards
Evan Harris


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of McKown, John
Sent: Saturday, 6 December 2008 10:13 a.m.
To: Midrange Systems Technical Discussion
Subject: YAIQ - Yet another ignorant question: multiple LPARs.

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