Storage Autogrow using Azure portal in Azure Database for PostgreSQL - Flexible Server

APPLIES TO: Azure Database for PostgreSQL - Flexible Server

This article describes how you can configure an Azure Database for PostgreSQL server storage to grow without impacting the workload.

For servers with more than 1 TiB of provisioned storage, the storage autogrow mechanism activates when the available space falls to less than 10% of the total capacity or 64 GiB of free space, whichever of the two values is smaller. Conversely, for servers with storage under 1 TB, this threshold is adjusted to 20% of the available free space or 64 GiB, depending on which of these values is smaller.

As an illustration, take a server with a storage capacity of 2 TiB ( greater than 1 TIB). In this case, the autogrow limit is set at 64 GiB. This choice is made because 64 GiB is the smaller value when compared to 10% of 2 TiB, which is roughly 204.8 GiB. In contrast, for a server with a storage size of 128 GiB (less than 1 TiB), the autogrow feature activates when there's only 25.8 GiB of space left. This activation is based on the 20% threshold of the total allocated storage (128 GiB), which is smaller than 64 GiB.

Enable storage auto-grow for existing servers

Follow these steps to enable Storage Autogrow on your Azure Database for PostgreSQL Flexible server.

1. In the Azure portal, select your existing Azure Database for PostgreSQL Flexible Server.

2. On the Flexible Server page, select Compute + storage

3. In the Storage Auto-growth section, checkmark to enable storage autogrow.

4. Select Save to apply the changes.

   

5. A notification confirms that auto grow was successfully enabled.

Enable storage auto-grow during server provisioning

1. In the Azure portal, during server provisioning, under Compute + storage select Configure server

   

2. In the Storage Auto-growth section, checkmark to enable storage auto grow.

   

Next steps

• Learn about service limits.