Your databases run on one or more virtual machine (VM) clusters that reside on Exadata infrastructure in your data center. Exadata Cloud@Customer also includes two control plane servers (CPS) that connect to an Oracle Cloud Infrastructure (OCI) region for cloud automation and administration.
Note: For clarity, the diagram displays only one database server, storage server, and CPS.
The client and backup networks provide access to your VM clusters on database servers through a layer 2 virtual local area network (VLAN) switch that you manage and bonded virtual network interface cards (VNICs).
Your VMs access your dedicated Exadata storage servers through a private, nonrouted interconnect network with SR-IOV mapped interfaces. Each physical Exadata database server and storage server has a highly available (HA) connection to a pair of redundant storage networking switches.
The database and storage servers are interconnected through a layer 2 management network and switches. There is no direct access from the management network to your client and backup networks. A subset of Oracle cloud automation functionality accesses your VMs through the management network by using a VNIC interface and a network address translation (NAT) address.
The CPS connects to the storage servers through the storage network switch, and it connects to the management network switch through the control plane network. An outgoing, persistent, secure automation tunnel connects the CPS to the Oracle-managed admin VCN in the OCI region through an internet access switch that you manage.
The following interfaces connect the various networks to the VM:
- bondeth0 for the client network
- bondeth1 for the backup network
- eth0 for the management network
- re0 for a storage/Real Application Clusters (RAC) interconnect (isolated through VLAN)
- re1 for a storage/RAC interconnect (isolated through VLAN)