# Elasticsearch database **URL:** \ **Category:** Elasticsearch\ **Created:** [March 5, 2014, 9:41am UTC](https://discuss.elastic.co/t/elasticsearch-database/16165 "2014-03-05T09:41:12Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![san](https://avatars.discourse-cdn.com/v4/letter/s/ba9def/32.png) [@san](https://discuss.elastic.co/u/san)\ **Post date:** [March 5, 2014, 9:41am UTC](https://discuss.elastic.co/t/elasticsearch-database/16165/1 "2014-03-05T09:41:12Z")
What is the underlying database type used by Elasticsearch and what is maximum size of logs that can be stored in Elasticsearch? -- 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/d2f1b928-2547-4a26-84b4-f6ea49b96ebe%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/d2f1b928-2547-4a26-84b4-f6ea49b96ebe%40googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![Binh\_Ly\_2](https://avatars.discourse-cdn.com/v4/letter/b/d07c76/32.png) [@Binh\_Ly\_2](https://discuss.elastic.co/u/Binh_Ly_2)\ **Post date:** [March 5, 2014, 1:30pm UTC](https://discuss.elastic.co/t/elasticsearch-database/16165/2 "2014-03-05T13:30:10Z")
Lucene (inverted index) is the underlying store. The maximum number of documents that can be stored in it varies by hardware. You can scale ES out horizontally with many nodes/servers if needed. -- 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/f90e5ea4-701f-485f-a774-8616f747d87b%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/f90e5ea4-701f-485f-a774-8616f747d87b%40googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![nik9000](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nik9000/32/44947_2.png) [@nik9000](https://discuss.elastic.co/u/nik9000)\ **Post date:** [March 5, 2014, 2:03pm UTC](https://discuss.elastic.co/t/elasticsearch-database/16165/3 "2014-03-05T14:03:07Z")
On Wed, Mar 5, 2014 at 4:41 AM, san [sandks14@gmail.com](mailto:sandks14@gmail.com) wrote: > what is maximum size of logs that can be stored in Elasticsearch? Each document can be pretty big. Some of mine are in tens of megabyte dumps from pdf files. Examples: [https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&search="mens+rea"~0&fulltext=Search&srbackend=CirrusSearch](https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&search=%22mens+rea%22~0&fulltext=Search&srbackend=CirrusSearch) Most of those matches are from text extracted from the pdf files. Many of those files are mostly text so the 10MB pdf turns into 8MB of text or something. -- 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/CAPmjWd019FKUAUjFOLbN4XhLeMrbyS7%2BXjOWeyN5Ypnd\_2yuFw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAPmjWd019FKUAUjFOLbN4XhLeMrbyS7%2BXjOWeyN5Ypnd_2yuFw%40mail.gmail.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**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, 1:45am UTC](https://discuss.elastic.co/t/elasticsearch-database/16165/4 "2017-07-06T01:45:32Z")