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Add information on updating replication_factor cloud vs open-source

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Bastian Hofmann
2024-11-25 17:31:31 +01:00
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qdrant-landing/content/documentation/guides/distributed_deployment.md
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@@ -752,8 +752,6 @@ to recover dead shards.
## Replication
*Available as of v0.11.0*
Qdrant allows you to replicate shards between nodes in the cluster.
Shard replication increases the reliability of the cluster by keeping several copies of a shard spread across the cluster.
@@ -761,9 +759,9 @@ This ensures the availability of the data in case of node failures, except if al
### Replication factor
When you create a collection, you can control how many shard replicas you'd like to store by changing the `replication_factor`. By default, `replication_factor` is set to "1", meaning no additional copy is maintained automatically. You can change that by setting the `replication_factor` when you create a collection.
When you create a collection, you can control how many shard replicas you'd like to store by changing the `replication_factor`. By default, `replication_factor` is set to "1", meaning no additional copy is maintained automatically. If you configured a default replication factor in the [Qdrant configuration](/documentation/guides/configuration/#configuration-options), this value will be the default for new collections instead. You can change that by setting the `replication_factor` when you create a collection.
Currently, the replication factor of a collection can only be configured at creation time.
The `replication_factor` can also be updated for existing collections. In Qdrant open-source, this will not automatically create new replicas. See [Creating new Shard Replicas](#creating-new-shard-replicas) for a description on how to create them manually. But in Qdrant Cloud, including Hybrid Cloud and Private Cloud, the shards will be automatically replicated or removed if you change the `replication_factor`.
```http
PUT /collections/{collection_name}
@@ -893,7 +891,7 @@ Since a replication factor of "2" would require twice as much storage space, it
### Creating new shard replicas
It is possible to create or delete replicas manually on an existing collection using the [Update collection cluster setup API](https://api.qdrant.tech/master/api-reference/distributed/update-collection-cluster).
It is possible to create or delete replicas manually on an existing collection using the [Update collection cluster setup API](https://api.qdrant.tech/master/api-reference/distributed/update-collection-cluster). This is usually only necessary if you run Qdrant open-source. In Qdrant Cloud shard replication is handled and updated automatically.
A replica can be added on a specific peer by specifying the peer from which to replicate.