cloud: update aws private link dr plan (#657)

Author: michaellzc

docs/cloud/private_connectivity_aws.mdx

@@ -78,3 +78,9 @@ Only if private artifact registry is protected by authentication, the customer w
 ### Can I use self-signed TLS certificate for my private resources?
 
 Yes. Please work with your account team to add the certificate chain of your internal CA to [site configuration](/admin/config/site_config#experimentalFeatures) at `experimentalFeatures.tls.external.certificates`.
+
+### What is the disater recovery plan?
+
+For customers with a disaster recovery plan that can failover the private resource deployment to another region, we recommend the customer to provision VPC endpoint services in the failover region and share the details with Sourcegraph during the onboarding process. In the event of an incident, the customer can reach out to support and request Sourcegraph to failover the connection to the failover region.
+
+For disater recovery plan of Sourcegraph Cloud, please reach out to your account team for more information.