Note in  Section "OOM Hardware Requirement" sentence is mismatched with example given.( three in sentence and 4*32 )

See below text

although at least three are recommended (for example 4x32GB - 8 vCores each ) 

Link is 

https://onap.readthedocs.io/en/beijing/submodules/oom.git/docs/oom_cloud_setup_guide.html