The image shows the Oracle Cloud Infrastructure (OCI) architecture with on-premises and third-party source content.

On-premises and third-party source sites each have local storage and a virtual machine installed with a CASource agent. The on-premises site connects to OCI through a site-to-site VPN or OCI FastConnect and has customer on-premises equipment (CPE). The third-party site sends replication content from the CASource agent through an internet gateway to the OCI Load Balancer.

The OCI Region has a dynamic routing gateway (DRG), internet gateway, and service gateway. There's one availability domain, with a VCN and the following subnets:

• Public subnet: contains a Bastion host and an OCI Load Balancer.
• Replication subnet: contains the CAServer management console, a CAServer for on-premises content that links to two dedicated OCI Block Storage instances, and a CAServer for thirdy-party content that links to two OCI Block Storage instances dedicated to the third-party CAServer.
• Restore subnet: contains a virtual machine for the on-premises source content and a virtual machine for the third-party source content.

The on-premises source content flow is as follows: content from the on-premises CASource agent through the DRG and then to the OCI Bastion Service and from the DRG to the CPE. Content flows from the third-party CASource agent through the internet gateway to the OCI Load Balancer. The Load Balancer sends content to the CAServer management console on the Replication subnet. On-premises disk to disk replication content is sent through the DRG to the CAServer on the Replication subnet. Recovery flows from the CAServer to the virtual machine on the Restore subnet.

The third-party source content flow is as follows: content from the third-party local storage flows to the CASource agent. Replication content flows from the third-party CASource agent through the internet gateway to the OCI Load Balancer. The Load Balancer sends content to the CAServer management console on the Replication subnet.

A service gateway provides two-way connection between the CAServer management console and the Oracle Services Network. There's also a two-way connection between the CAServer for on-premises and the Oracle Services Network. The Oracle Services Network contains Policies, OCI IAM, OCI Auditing, OCI Monitoring, and OCI Logging.