About Configuring Recovery Service Subnets
Recovery service subnets enable network isolation for Recovery Service operations in a VCN.
Recovery Service connects with your Oracle Cloud databases provisioned in a virtual cloud network (VCN) within your tenancy. Recovery Service subnets establish network presence for Recovery Service in each VCN.
Your database VCN must include a single private subnet dedicated for backups to Recovery Service.
In the Oracle Cloud Infrastructure (OCI) Console, the Recovery Service Subnets page provides the interface to quickly register a recovery service subnet by selecting an existing subnet in your database VCN.
You can register only a single Recovery Service subnet per VCN in your tenancy.