Metallic backup gateways handle important functions and use cases.
Backup Gateway Functions
Backup gateways function as both access nodes and MediaAgents:
As access nodes, backup gateways connect with, discover, back up, and restore your data source (which the Metallic control panel cannot access directly by the Metallic control plane).
As MediaAgents, backup gateways move data to and from the access nodes to the storage targets. Backup gateways also perform deduplication operations before moving data to storage targets.
Backup Gateway Use Cases
The following cases require a backup gateway:
You want to protect on-premises applications.
In addition to a cloud copy of the backup data, you need a local copy.
The outbound network security is restricted or blocked from a data source.
You want to protect cloud resources in Amazon Web Services (AWS).
For more information about preparing a Metallic backup gateway for AWS, see System Requirements for an AWS Deployment of a Metallic Backup Gateway and Getting Started with Amazon EC2.
You want to protect cloud resources in Oracle Cloud Infrastructure (OCI).
For more information about preparing a Metallic backup gateway for OCI, see System Requirements for OCI Deployment of a Metallic Backup Gateway and Complete the Guided Setup for OCI.
You want to protect database resources in Azure.
For more information, see Adding a Backup Gateway for Azure Databases.