Hi
We are planning to ugrade our existing OS from 5.3 to 6.1. We have the following approach for this activity.
1) Take a backup and upgrade the existing OS to AIX 6.1 for all development and Quality environment.
2) For Production , copy the existing SAP System(ECC6 ehp4 and CRM 7 upgraded) to new Hardware with AIX 5.3 and then upgrade the OS to AIX 6.1.
We have ugraded the ECC6 to ehp4 and CRM 5 to CRM 7 recently (October 2010), kindly suggeset the best approach for the above mentioned activity .
Regards
Prasanna.B.S