# On-Premises Backup Gateways

You can install a Commvault backup gateway on a virtual machine or a physical server in an on-prem datacenter.

You must install an on-prem backup gateway for the following cases:

- To protect on-premises applications

- To store backups locally

- When outbound network security is restricted or blocked

Important

After you install an on-prem backup gateway for one workload, you can use the same backup gateway to protect other on-prem workloads.

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