Which model is available on ESXi but is not supported for NSX use?

The VM-50 model is available on ESXi but is not supported for use with NSX because it typically represents a smaller form factor in terms of resource allocation, meaning it may lack the necessary performance and features required to effectively support NSX functionality. NSX, which is VMware's network virtualization platform, requires a certain level of resources to provide features such as distributed networking, security, and multi-tenancy, which are essential for larger, more complex environments.

That's why lower-tier models like the VM-50 are generally considered unsuitable for NSX deployments, as they may not provide the scalability and performance needed for such advanced networking functionalities. In contrast, higher-end models, which have greater resources and capabilities, may be fully supported for NSX use, making them more suitable for enterprises looking to leverage NSX’s capabilities effectively.