Do you think there will ever be a need for yet another level of nested virtualization?...

Do you think there will ever be a need for yet another level of nested virtualization?
What would be some use cases for nested virtualization?

Expert Solution

Answer :

Nested Virtualization allows you to run a Hypervisor within a VM. There are still some limitations of nested virtualization, like:

Checkpoints cannot be applied to a running VM.
Live migration fails for the VM.
Runtime memory resize does not function.

These limitations can lead for a need of another level of nested virtualization.

There are many use cases for nested virtualization. Some of them are:

A beefy workstation with 32 GB of RAM running VMware Workstation allows us to run three ESXi hosts, each with 8 GB of RAM. Three ESXi hosts are the bare minimum for running a vSphere lab.
A growing use case for more critical workloads involves the public cloud. Oracle Ravello, for example, has long provided the capability to run nested virtual machines in both Google Cloud and Amazon Web Services (AWS). Google direct support is a validation of the need to run unmodified workloads directly on the cloud.
An alternative to VMware Cloud on AWS is to run ESXi directly on Google Compute Engine. While not supported by VMware, the solution provides a hack for getting test and dev workloads on elastic compute resources.

venereology answered 7 months ago

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