Installing Z/OS

Sam_nura · New User Joined: 04 Dec 2008 Posts: 46 Location: Bangalore

Hi,
I am doing the installation of z/os. As of my knowledge we can install the z/os by using anyone of the following methods,

--> ServerPac
--> Custom-Built Product Delivery Option (CBPDO)
--> SystemPac

Also we can install the Z/OS without using an installation package like sharing system libraries or cloning an already-installed z/OS.

publib.boulder.ibm.com/infocenter/zos/v1r9/index.jsp?topic=/com.ibm.zos.r9.e0zb100/izwouad.htm

Can any one suggest me which method will be a prober one? What is the difference in installing Z/OS without installation package? Thanks in advance.

Robert Sample · Posted: Thu Jul 09, 2009 6:49 pm

Google is your friend. I searched for cbpdo versus serverpac and found the first hit has:

Sam_nura · New User Joined: 04 Dec 2008 Posts: 46 Location: Bangalore

Hi Robert,
we already having one Lpar (driving system) which is having all features of Z/OS. Now preparing the new Production environment. so the cloning method is a correct way to make the new environment?

Robert Sample · Posted: Thu Jul 09, 2009 8:44 pm

Is there an LPAR already established so you're just copying the operating system to the other LPAR? If so, then cloning is the easiest way of copying -- but remember cloning includes the Unix System Services root along with the sysres packs, jes packs, and what other packs your system resides on.

If you don't already have the second LPAR set up, then cloning is the LAST thing you want to do. You have to work out the details of the hardware accessing both LPARs before proceeding.

Sam_nura · New User Joined: 04 Dec 2008 Posts: 46 Location: Bangalore

OK.. but the cloning would not be affect the future up gradation right...

Bill Dennis · Posted: Fri Jul 10, 2009 7:42 pm

Future upgrades would be applied to the driving system and then you clone again.

Sam_nura · New User Joined: 04 Dec 2008 Posts: 46 Location: Bangalore

Thanks Dennis... But we cant directly apply the PTFs and those stuff in the cloned system right. For example if i go for migration from 1.7 to 1.9 we needs to apply some toleration PTFs

Robert Sample · Posted: Fri Jul 10, 2009 11:08 pm

You need two LPARs defined -- your sandbox (testing) system and your production system. You apply the toleration PTFs to the testing system, then do the upgrade, then clone to your production LPAR when your application testers agree the new operating system is ready for their production work. You are then ready to apply the toleration PTFs to your testing system for the next operating system upgrade. You can keep the testing system up for experimentation or deactivate it until you need it again -- probably depending on how the LPAR weights are assigned and how badly production needs the cycles.

Sam_nura · New User Joined: 04 Dec 2008 Posts: 46 Location: Bangalore

Thanks Robert...

I think this will be best method to use the new products instance of directly installing into the production system without any testing.

Robert Sample · Posted: Mon Jul 13, 2009 6:27 pm

I strongly concur. It is rare, but IBM has introduced serious problems while creating fixes -- so applying changes directly to production is a risky business; 99% of the time it'll work fine but that 1% you'll have to IPL to recover, and you'd better have a good pre-fix backup in that case!