# Storage vs index size, memory foot print etc **URL:** \ **Category:** Elasticsearch\ **Created:** [April 27, 2015, 1:23pm UTC](https://discuss.elastic.co/t/storage-vs-index-size-memory-foot-print-etc/23419 "2015-04-27T13:23:55Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Jakub\_Stransky](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jakub_stransky/32/732_2.png) [@Jakub\_Stransky](https://discuss.elastic.co/u/Jakub_Stransky)\ **Post date:** [April 27, 2015, 1:23pm UTC](https://discuss.elastic.co/t/storage-vs-index-size-memory-foot-print-etc/23419/1 "2015-04-27T13:23:55Z")
Hello, we are evaluating ES for a production use and trying to prepare some capacity estimation. During that task I just realized that some terms and internal mechanics are not clear enough to me and I wasn't able to find a relevant blog post, SO question which would clarify that for me. - Storage size vs index size - OLAP (slices, dices, aggregation, etc) kind of queries Hope that the questions make sense Jakub -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/82563a28-2598-4d93-9820-895ae5a591fa%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/82563a28-2598-4d93-9820-895ae5a591fa%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 28, 2015, 1:20am UTC](https://discuss.elastic.co/t/storage-vs-index-size-memory-foot-print-etc/23419/2 "2015-04-28T01:20:23Z")
You don't need to store the entire index in memory, that's now how ES works. Regarding the second point, you index a document's fields which allows you to search it, storing means you can also return the value of the field if it is found in the search. On 27 April 2015 at 23:23, Jakub Stransky [stransky.ja@gmail.com](mailto:stransky.ja@gmail.com) wrote: > Hello, > > we are evaluating ES for a production use and trying to prepare some > capacity estimation. During that task I just realized that some terms and > internal mechanics are not clear enough to me and I wasn't able to find a > relevant blog post, SO question which would clarify that for me. > > - Storage size vs index size > > - OLAP (slices, dices, aggregation, etc) kind of queries > > Hope that the questions make sense > Jakub > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/82563a28-2598-4d93-9820-895ae5a591fa%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/82563a28-2598-4d93-9820-895ae5a591fa%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/82563a28-2598-4d93-9820-895ae5a591fa%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/82563a28-2598-4d93-9820-895ae5a591fa%40googlegroups.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAEYi1X9JGsqtsca6OGTuV7fWSbbCW9%3Dd%3Dnk\_ZzzFP%2B4sy5dQSw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEYi1X9JGsqtsca6OGTuV7fWSbbCW9%3Dd%3Dnk_ZzzFP%2B4sy5dQSw%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 12:17am UTC](https://discuss.elastic.co/t/storage-vs-index-size-memory-foot-print-etc/23419/3 "2017-07-06T00:17:31Z")