While increasingly rare, a region-wide outage might happen, impacting availability of Azure Cosmos DB for PostgreSQL clusters hosted in that region. Geo-redundant backup for Azure Cosmos DB for PostgreSQL allows you to protect against outages impacting the primary region by storing cluster backup in another Azure region.
Geo-redundant backup is an optional capability that can be enabled during cluster provisioning. With geo-redundant backup enabled on your cluster, you can do point-in-time restore (PITR) for your cluster to another region at any time regardless of availability of the primary region.
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