MTR Lv2Posted 18 Nov 2023 00:49
  
it is possible to run HCI (Hyper-Converged Infrastructure) in a nested virtualization environment for testing purposes. However, there are certain limitations and considerations to keep in mind.

Performance: Nested virtualization can introduce performance overhead due to the additional layer of virtualization. This can impact the performance of HCI components such as storage, networking, and compute.

Hardware Emulation: Emulating SSDs using the vmx configuration might not provide the same performance characteristics as real SSDs. This can affect the functionality and performance of HCI, especially when it comes to storage operations.

Health Check Failures: The health check failures you mentioned could be related to the emulated SSDs or other configuration issues. It's important to check the specific error messages or logs to determine the exact cause of the failure. It's possible that certain HCI features or checks rely on specific hardware capabilities that might not be fully emulated in a nested virtualization environment.

Bare Metal Deployment: For production deployments or scenarios where full performance and compatibility are required, it is recommended to deploy HCI on bare metal servers. Bare metal deployments provide direct access to hardware resources and can ensure optimal performance and compatibility.

In summary, while it is possible to run HCI in a nested virtualization environment for testing purposes, it may not fully replicate the performance and functionality of a bare metal deployment. If you encounter health check failures or performance issues, it may be necessary to consider deploying HCI on dedicated bare metal servers to ensure optimal performance and compatibility.

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