# Max\_snapshot\_bytes\_per\_sec - Implications of setting this value

**URL:** <https://discuss.elastic.co/t/max-snapshot-bytes-per-sec-implications-of-setting-this-value/300643>\
**Category:** Elasticsearch\
**Created:** [March 24, 2022, 9:37pm UTC](https://discuss.elastic.co/t/max-snapshot-bytes-per-sec-implications-of-setting-this-value/300643 "2022-03-24T21:37:37Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![bar0n36](https://avatars.discourse-cdn.com/v4/letter/b/dbc845/32.png) [@bar0n36](https://discuss.elastic.co/u/bar0n36)\
**Post date:** [March 24, 2022, 9:37pm UTC](https://discuss.elastic.co/t/max-snapshot-bytes-per-sec-implications-of-setting-this-value/300643/1 "2022-03-24T21:37:37Z")

</div>

I am after a more in depth explanation of the implications of adjusting the max\_snapshot\_bytes\_per\_sec for an S3 repository. Reading the documentation, it is simply described as

```auto
max_snapshot_bytes_per_sec
(Optional, byte value) Maximum snapshot creation rate per node. Defaults to 40mb per second.

```

My main questions are:

- Does adjusting this setting have a material impact on the cluster? ie: If I set this to way too high, is the Snapshotting process going to consume more resources and start to block index and search operations? I have found forum posts on here and stack overflow recommending increasing it (some increasing it to 10G).
- Does changing this setting impact running snapshots, or only new ones?

I have a cluster with 4 data nodes (to expand to probably 6) and around 20 TB of data (to expand to ~40) and want to ensure I am getting sufficient snapshot throughput to actually have a functional backup. I forgot to adjust my snapshot frequency as the data volumes have increased, and as a result I have spent 2 days just trying to get snapshots completing again and would like to know if adjusting this setting is a recommended approach to improving throughput.

Thanks

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 21, 2022, 9:38pm UTC](https://discuss.elastic.co/t/max-snapshot-bytes-per-sec-implications-of-setting-this-value/300643/2 "2022-04-21T21:38:26Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.