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Single node is only available for network-attached storage databases. You cannot create a single node Metal database.
Single node databases are available on all network-attached storage cluster sizes and begin at $5/month. For full single node pricing, see the pricing page. To create a single node database, just select “Single node” and your cluster size during the database creation process.

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Resizing your single node database

You can upsize or downsize your single node Postgres database by going to “Clusters”, selecting the cluster size from the dropdown, and clicking “Queue instance changes”, “Apply changes”. During the resize, we will surge a new replica on the selected size, sync your data, promote the replica to primary, and decommission the old node.

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Switch from single node to HA

To upgrade your single node database to an HA cluster, go to the Clusters page, select the “HA Primary + Multi-replica” option, choose your cluster size from the dropdown (network-attached storage or Metal), click “Queue instance changes”, and click “Apply changes”. During this process, 2 additional replicas across 3 Availability Zones are added to your database cluster. If you selected a Metal cluster, your data is copied over to the new instances with locally-attached storage. It follows the process described in the Upgrading to a Metal database documentation.

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Switch from HA to single node

To switch an HA database with 1 primary and 2+ replicas to single node, go to your Clusters page, select “Single node”, choose a cluster size, click “Queue instance changes”, and click “Apply changes”. This will remove any existing replicas you have and leave you with a single non-HA primary.