This question, reasonable as it appears, is just unanswerable in the abstract. About all you can do is prototype and test. Take "facet queries". The hardware requirements vary drastically based on the number of unique values in the field(s) you're faceting on, as well as whether they're multi-valued or not....
However, your data set isn't very big as far as document count is concerned (although how big are those documents? 1K? 1G?). I'd expect, assuming that you're not talking very large documents, that you could fit this on any reasonable machine and test, see jMeter or SolrMeter. I've put 11M documents on my 2009 laptop easily (Wikipedia english). Admittedly just 5M of them have text..... At any rate, set up jMeter or SolrMeter on a test machine and keep adding documents until you strain it and go from there. Best Erick On Thu, Jul 12, 2012 at 5:46 AM, Sohail Aboobaker <sabooba...@gmail.com> wrote: > We will be using Solr 3.6
