How to upgrade AIX5.3 to 6.1?

I'm new to AIX. How to upgrade  AIX5.3 to 6.1   ?  Thanks in advanced.
mokkanAsked:
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woolmilkporcConnect With a Mentor Commented:
This upgrade is called a "migration" in AIX terms.

Get the AIX 6.1 base level DVD set from IBM or download the ISO images.

Please note that these images are not available on Fix Central. They can be obtained from IBM ESS if you have a conract with IBM:

https://www-304.ibm.com/servers/eserver/ess/ProtectedServlet.wss

Just boot your machine from this medium. The installer contained on it wil recognize the existing AIX version and give you the choice to either perform a migration or a fresh installation from scratch.

If you decide to perform a migration no user data will be affected, but you will get a new  /tmp, /usr and /opt.

The migration process will take roundabout 40 minutes, and after the mandatory concluding reboot you're done.

A few config files will be modified. The DVD contains tools/scripts which can be run beforehand showing what would be affected. Besides that, a backup copy of each modified file will be saved during the migration process.

Here is the detailed plan from IBM on how to prepare for a migration.

https://www-304.ibm.com/support/docview.wss?uid=isg3T1011431
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mokkanAuthor Commented:
Thank you
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