Upgrading from QDX 3.8.1 to 5.3

Assuming I remember the App/OS version matrix correctly, I would do the following:

Upgrade 3.8.1 to 5.3 on the current platform.

Upgrade AIX from 5.1 to 5.2.

Cutover to new platform.

I don’t think you have very many choices with the environment that you’re in.

Good luck!

Steve

Our servers are IBM P570s running AIX 5.2 and my latest aproach to meeting the challenge of upgrading more than cloverleaf all at once has been to use LPARs.

In lay terms I think of LPARs as virtual machine(s) running on the same physical hardware that PROD is on.

I have found them very handy for this sort of thing.

David.

last year we migrated from

  AIX 4.3.3  Cl 3.5.5

to

  AIX 5.3     Cl 5.4.1

Our configuration is to have one Cloverleaf site connected to one application.

For example a PAS application communicates messages to a Cloverleaf ‘pas’ site, which communicates messages to a Cloverleaf ‘data repository’ site (performing the translations) and this communicates messages to the ‘data repository’.

We had about 70 Cloverleaf sites and, in simple terms, we created ‘cross over’ sites and ‘pipe sites’ to aid the migration

The ‘cross over’ site connected Cloverleaf Sites on the two servers.

The ‘pipe’ site’ replaced an ‘application site’ on the old sever – where an application connected to Cloverleaf –  and connected to the application site on the new server.

With this process in place, we were able to migrate Cloverleaf sites to the new server without the need to update many applications that sent or received messages.

All changes were to the ‘cross over’ and ‘pipe’ sites.

We migrated the Cloverleaf sites over one week and then requested applications to migrate to the new server (a new DNS) and we just turned off the appropriate ‘pipe’ site.