Red hat cluster over vmware

Hi,
I am trying to build a Red hat cluster over 2 vms
and looking for a best practice to this implementation.
1- Fencing devices?
2- how to present the Q and the shared volumes?
3- special parameters/ configurations.

env:
- RHEL 6.4
- exsxi /vcenter 5.5
- EMC SAN storage.

any document/ article or information is appreciated.