Elasticsearch snapshot retention

Recently I am responsible for our ELK-environment (6.6). It has run for 2 years without any management. For me it's a black box but I'm learning.
First thing I want to tackle is a correct backup solution.
I know elasticsearch is using snapshots. But i have a question about retention.
On daily base I create 1 snapshot and a want a retention of 10 days. Can I remove on the eleventh day the first snapshot, on day 12 the second and so on ... ? Or how do I remove old snapshot without breaking the consistency ?
Thanks in advance.

You can consider a snapshot as a full backup. Which means that you can remove whatever snapshot you want, it won't affect the other snapshots.

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