---
layout: default
title: Availability and recovery settings
parent: Configuring OpenSearch
nav_order: 90
---

# Availability and recovery settings

Availability and recovery settings include settings for the following:

- [Snapshots](#snapshot-settings)
- [Cluster manager task throttling](#cluster-manager-task-throttling-settings)
- [Remote-backed storage](#remote-backed-storage-settings)
- [Search backpressure](#search-backpressure-settings)
- [Shard indexing backpressure](#shard-indexing-backpressure-settings)
- [Segment replication](#segment-replication-settings)
- [Cross-cluster replication](#cross-cluster-replication-settings)

To learn more about static and dynamic settings, see [Configuring OpenSearch]({{site.url}}{{site.baseurl}}/install-and-configure/configuring-opensearch/index/).

## Snapshot settings

OpenSearch supports the following snapshot settings:

- `snapshot.max_concurrent_operations`(Dynamic, integer): The maximum number of concurrent snapshot operations. Default is `1000`. 

### Security-related snapshot settings

For security-related snapshot settings, see [Security settings]({{site.url}}{{site.baseurl}}/install-and-configure/configuring-opensearch/security-settings/).

### File system settings

For information about Amazon S3 repository settings, see [Amazon S3]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/snapshots/snapshot-restore/#shared-file-system).

### Amazon S3 settings

For information about Amazon S3 repository settings, see [Amazon S3]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/snapshots/snapshot-restore/#amazon-s3).

## Cluster manager task throttling settings

For information about cluster manager task throttling settings, see [Setting throttling limits]({{site.url}}{{site.baseurl}}/tuning-your-cluster/cluster-manager-task-throttling/#setting-throttling-limits).

## Remote-backed storage settings

OpenSearch supports the following cluster-level remote-backed storage settings:

- `cluster.remote_store.translog.buffer_interval` (Dynamic, time unit): The default value of the translog buffer interval used when performing periodic translog updates. This setting is only effective when the index setting `index.remote_store.translog.buffer_interval` is not present. 

- `remote_store.moving_average_window_size` (Dynamic, integer): The moving average window size used to calculate the rolling statistic values exposed through the [Remote Store Stats API]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/remote-store/remote-store-stats-api/). Default is `20`. Minimum enforced is `5`. 

For more remote-backed storage settings, see [Remote-backed storage]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/remote-store/index/) and [Configuring remote-backed storage]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/remote-store/index/#configuring-remote-backed-storage).

For remote segment backpressure settings, see [Remote segment backpressure settings]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/remote-store/remote-segment-backpressure/#remote-segment-backpressure-settings).

## Search backpressure settings

Search backpressure is a mechanism used to identify resource-intensive search requests and cancel them when the node is under duress. For more information, see [Search backpressure settings]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/search-backpressure/#search-backpressure-settings).

## Shard indexing backpressure settings

Shard indexing backpressure is a smart rejection mechanism at a per-shard level that dynamically rejects indexing requests when your cluster is under strain. For more information, see shard indexing backpressure [settings]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/shard-indexing-settings/).

## Segment replication settings

For information about segment replication settings, see [Segment replication]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/segment-replication/index/).

For information about segment replication backpressure settings, see [Segment replication backpressure]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/segment-replication/backpressure/).

## Cross-cluster replication settings

For information about cross-cluster replication settings, see [Replication settings]({{site.url}}{{site.baseurl}}/tuning-your-cluster/replication-plugin/settings/).