A retail company has several on-premise data centers which span multiple geographical locations. They plan to move many of their business critical applications to Oracle Cloud Infrastructure (OCI). These applications require highly available network connections between on-premises and OCI.
Which option provides the highest level of redundancy?
To achieve the highest level of network connection redundancy between on-premises and Oracle Cloud Infrastructure (OCI), combining both Site-to-Site VPN and Fast Connect connections is the best approach. This setup provides multiple independent pathways for the data, ensuring that if one connection fails, the other can take over, thereby maximizing the reliability and availability of the network connection. Setting up these connections to separate edge devices on-premises further increases redundancy by avoiding a single point of failure in terms of hardware.
Service level redundancy doesn't mean SLA. My understanding is that the service should be redundant. See "Have a service level redundancy by creating a IPsec VPN service alongside FC. Oracle always prioritizes FC over VPN connection." in page 45 from https://www.oracle.com/a/ocom/docs/connectivity-fast-connect-200.pdf