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Copy file name to clipboardExpand all lines: articles/healthcare-apis/azure-api-for-fhir/disaster-recovery.md
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@@ -15,7 +15,7 @@ Azure API for FHIR is a fully managed service, based on Fast Healthcare Interope
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The DR feature provides a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 60 minutes.
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## How to enable DR
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## How to enable DR
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To enable the DR feature, create a one-time support ticket. You can choose an Azure paired region or another region where the Azure API for FHIR is supported. The Microsoft support team will enable the DR feature based on the support priority.
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It's worth noting that the throughput RU/s must have the same values in the primary and secondary regions.
During a primary region outage, the Azure API for FHIR automatically fails over to the secondary region and the same service endpoint is used. The service is expected to resume in one hour or less, and potential data loss is up to 15 minutes' worth of data. Other configuration changes may be required. For more information, see [Configuration changes in DR](#configuration-changes-in-dr).
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[](media/disaster-recovery/failover-in-disaster-recovery.png#lightbox)
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[](media/disaster-recovery/failover-in-disaster-recovery.png#lightbox)
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### Affected region recovery
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After the affected region recovers, it's automatically available as a secondary region and data replication restarts. You can start the data recovery process or wait until the failback step is completed.
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[](media/disaster-recovery/replication-in-disaster-recovery.png#lightbox)
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[](media/disaster-recovery/replication-in-disaster-recovery.png#lightbox)
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When the compute has failed back to the recovered region and the data hasn't, there may be potential network latencies. The main reason is that the compute and the data are in two different regions. The network latencies should disappear automatically as soon as the data fails back to the recovered region through a manual trigger.
The compute fails back automatically to the recovered region. The data is switched back to the recovered region manually by the Microsoft support team using the script.
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[](media/disaster-recovery/failback-in-disaster-recovery.png#lightbox)
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[](media/disaster-recovery/failback-in-disaster-recovery.png#lightbox)
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## Configuration changes in DR
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Ensure that you grant the same permissions to the system identity of the Azure API for FHIR. Also, if the storage account is configured with selected networks, see [How to export FHIR data](../fhir/export-data.md).
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### IoMT FHIR Connector
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Any existing connection won't function until the failed region is restored. You can create a new connection once the failover has completed and your FHIR server is accessible. This new connection will continue to function when failback occurs.
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> [!NOTE]
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> IoMT Connector is a preview feature and does not provide support for disaster recovery.
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## How to test DR
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While not required, you can test the DR feature on a non-production environment. For DR test, only the data will be included and the compute won't be included.
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* (Optional) Share any feedback with the Microsoft support team.
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> [!NOTE]
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> The DR test will double the cost of your test environment during the test. No extra cost will incur after the DR test is completed and the DR feature is disabled.
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> [!NOTE]
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> The DR offering is subject to the [SLA for Azure API for FHIR](https://azure.microsoft.com/pricing/details/health-data-services), 1.0.
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## Next steps
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In this article, you've learned how DR for Azure API for FHIR works and how to enable it. To learn about Azure API for FHIR's other supported features, see
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