# Does Elasticsearch automatically compress indexes?
**URL:** https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354
**Category:** Elasticsearch
**Created:** [July 31, 2020, 12:46pm UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354 "2020-07-31T12:46:58Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@d.silwon](https://discuss.elastic.co/u/d.silwon)
#### Post date: [July 31, 2020, 12:46pm UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354/1 "2020-07-31T12:46:58Z")
Dears,
We have ELK in version 7.7.1. Everyday we send to ELK logs is size about 30GB. I'm worried about FS space.
My question is does Elasticsearch automatically compress indexes?
or
Should it be forced with the correct configuration?
Best Regards,
Dan
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [July 31, 2020, 12:48pm UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354/2 "2020-07-31T12:48:26Z")
Yes, the source is compressed by default although you can make this more aggressive through the best\_compression codec.
---
### Author:  [@d.silwon](https://discuss.elastic.co/u/d.silwon)
#### Post date: [July 31, 2020, 12:51pm UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354/3 "2020-07-31T12:51:00Z")
Thank you @Christian_Dahlqvist
How it can be changed?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [August 3, 2020, 10:24pm UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354/4 "2020-08-03T22:24:08Z")
[https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-disk-usage.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-disk-usage.html)
---
### Author:  [@d.silwon](https://discuss.elastic.co/u/d.silwon)
#### Post date: [August 4, 2020, 3:21am UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354/5 "2020-08-04T03:21:50Z")
@warkolm thank you very much
Is there any way to check compression method per index?
For example: right now I have default compression LZ4 and today I will change it to best\_compression in index template. If I good understand tommorrow will be created new index with new compression method best\_compression. Is it right my thinking?
---
### Author:  [@d.silwon](https://discuss.elastic.co/u/d.silwon)
#### Post date: [August 4, 2020, 5:27am UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354/6 "2020-08-04T05:27:23Z")
I found it:
```auto
GET /index_name/_settings
```
and result looks like:
```auto
{
"index_name-2020.08.04" : {
"settings" : {
"index" : {
"codec" : "best_compression",
"number_of_shards" : "1",
"provided_name" : "index_name-2020.08.04",
"creation_date" : "1596499201612",
"number_of_replicas" : "1",
"uuid" : "ynixVMDdQtKvriYj_XkCuQ",
"version" : {
"created" : "7070099"
}
}
}
}
}
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 1, 2020, 5:27am UTC](https://discuss.elastic.co/t/does-elasticsearch-automatically-compress-indexes/243354/7 "2020-09-01T05:27:23Z")
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