Ramprasad Padmanabhan [ramprasad...@gmail.com] wrote: > I have a single machine 16GB Ram with 16 cpu cores
Ah! I thought you had more machines, each with 16 Solr cores. This changes a lot. 400 Solr cores of ~200MB ~= 80GB of data. You're aiming for 7 times that, so about 500GB of data. Running that on a single machine with 16GB of RAM is not unrealistic, but it depends a lot on how often a search is issued and whether or not you can unload inactive cores and accept the startup penalty of loading it the first time a user searches for something. Searches will be really slow if you are using a spinning drive. You might be interested in http://sbdevel.wordpress.com/2013/06/06/memory-is-overrated/ As for indexing then I can understand if you run into problems with 400 concurrent updates to your single machine setup. You should limit the amount of concurrent updates to a bit more than the number of cores, so try with 20 or 40. - Toke Eskildsen
