This image shows an OCI region with one availability domain and two fault domains. The region contains a VCN with an internet gateway.

The VCN contains three subnets:

• Subnet 1 (LB Tier): a public subnet that contains a primary network load balancer in fault domain one, and a standby network load balancer in fault domain two. Each load balancer is a VTAP target.
• Subnet 2 (Web Tier): a public subnet that contains web server 1 in fault domain 1 and a VTAP Traffic Data compute instance in fault domain 2. Web server 1 is a VTAP source. VTAP traffic data is routed to the VTAP Traffic Data compute instance, which has a listener installed.
• Subnet 3 (DB Tier): a private subnet that contains Autonomous Data Warehouse in fault domain one and object storage in fault domain two.Autonomous Data Warehouse has VTAP enabled. The object storage is used as VTAP long-term storage.

There is a storage gateway between subnet 2 and subnet 3, and the listener on the VTAP Traffic Data compute instance in subnet 2 feeds data to the storage gateway, which then sends the data to the object storage in subnet 3.

Each subnet has a security list and a route table.

Outside of the region are end users, who connect to OCI through the internet gateway. The gateway sends traffic to the primary network load balancer, which directs traffic to the web servers as appropriate. The web servers communicate with Autonomous Data Warehouse.