@John Swartz, @Mark Herring , @Sagar Shimpi http://hortonworks.com/blog/how-to-size-your-hadoop-cluster page mentions a link to size-o-tron: http://hortonworks.com/resources/cluster-sizing-guide/ That's what John is looking for, and not only him. With the new redo of the portal, another page that supposed one to download a PDF is broken: http://info.hortonworks.com/SizingGuide.html Until then, the best bet is http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.4.2/bk_cluster-planning-guide/content/index.html. That is for HDP 2.4.2, but similar can be found for other versions. ... View more