- **Storage auto-grow**: When configuring read replicas for an Azure Database for PostgreSQL flexible server instance, it's essential to ensure that the storage autogrow setting on the replicas matches that of the primary server. The storage autogrow feature allows the database storage to increase automatically to prevent running out of space, which could lead to database outages. To maintain consistency and avoid potential replication issues, if the primary server has storage autogrow disabled, the read replicas must also have storage autogrow disabled. Conversely, if storage autogrow is enabled on the primary server, then any read replica that is created must have storage autogrow enabled from the outset. This synchronization of storage autogrow settings ensures the replication process isn't disrupted by differing storage behaviors between the primary server and its replicas.
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