10g rac deinstall and 11.2.0.3 rac installation on aix 6.1

Hi,
I have to perform deinstallation of 2 node 10g rac on aix and on same setup i need to install 2 node 11.2.0.3 rac on aix 6.1.
As being a newbie in this please guide me from where to find the exact documentation for the same.
Also, In linux we need to install oracleasm rpm, In AIX do we need the same?
Thanks.

Following are the OS requirement for Oracle 11gr2 installation on AIX
AIX 5L V5.3 TL 09 SP1 ("5300-09-01") or higher, 64 bit kernel (Part Number E10854-01)
AIX 6.1 TL 02 SP1 ("6100-02-01") or higher, 64-bit kernel
AIX 7.1 TL 00 SP1 ("7100-00-01") or higher, 64-bit kernel
Following can be confirmed from metalink ID 169706.1

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