What Is a Nested Server?

A nested server, in simple terms, is a virtual server that operates within another virtualized environment. This setup allows you to run multiple layers of virtualization, enabling advanced testing, training, or development scenarios.

For example:

• You can run KVM on a VMware ESXi host.
• You can install Hyper-V on a virtual machine created by Proxmox.

Nested servers are commonly used in the following cases:

1. Development and Testing Environments: To test new software in a controlled and isolated space.
2. Learning and Experimentation: To explore and practice virtualization technologies without impacting production environments.
3. Resource Efficiency: To reduce dependency on physical servers while maximizing utilization.

Performance depends on the physical server's hardware and the compatibility of virtualization platforms.