How to make a backup of our Elasticsearch indexes to the disk to have archive of our logs?
Hello Milad,
You can backup using the snapshot ES, send for s3 (AWS), or using architecture HOT/WARM enabling best compression.
https://www.elastic.co/guide/en/elasticsearch/reference/5.5/modules-snapshots.html
depending on your need for structure, the first option is the most viable. 
Hi @Fram_Souza
Thanks for your quick reply and help. I will check the link