Originally posted by: POWERHAguy
The short answer is yes. I'm not sure I can fill in all the blanks for the longer answer. A doc below MIGHT be helpful, that the PoweHA section of it still focuses on RAC.
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/5cb5ed706d254a8186256c71006d2e0a/781e2275188c706886257c98006b1c6e/$FILE/IBM%20AIX%20Oracle%2012cR1-tips_SHANMUGAM%2026%20Feb%202014.pdf
You do generally need to install the binaries on each node in the cluster. My experience has been with customers in my benchmark days, which may be dated now, was that the rootpre.sh script is borderline even useful. The installation when it detects PowerHA automatically installs RAC w/o prompting you otherwise and requires post install changes to correct. I always had the luxury of a couple top notch IBM ATS Oracle folks to do this for me.
I have a demo, though it shows 11.2 (non-RAC) and SVC replication with PowerHA EE. It uses ASM, but it still has a VG and a logical volume spans the entire VG. It was explained to me back then this was considered a best practice when utilizing the Grid Infrastructure (take that with a grain of salt). But its all the end result, not the how-to part of it all.
https://www.youtube.com/watch?v=jVn16_BISQw
Ironically enough I am hoping to do a similar install, though may not use ASM, in the near future for demo with Oracle and flash performance. So I will share anything I learn and please do likewise.