Hyper-V Off-host proxy requirement

[Yukinobu]

The Hyper-V role, which was listed as a requirement for the Hyper-V off-host proxy in V12, has been removed in V13.
https://helpcenter.veeam.com/archive/ba ... ckup-proxy
https://helpcenter.veeam.com/docs/vbr/u ... ckup-proxy

Does this mean it's no longer necessary?
Also, the statement that it can only be assigned to physical machines has been removed. Does this mean that an improvement has been made so that the Hyper-V off-host proxy role can be assigned to a virtual machine without performance degradation?
https://helpcenter.veeam.com/archive/ba ... ckup-proxy
https://helpcenter.veeam.com/docs/vbr/u ... ckup-proxy

Has no such improvement or change been made to the Hyper-V backup architecture, and is this due to a lack of documentation?
Which one should I believe?

Best regards,
Yukinobu Asami

[vnikiforov]

Hello, Yukinobu,

Thank you for pointing that out.
I will clarify that internally and return with the answer.

[vnikiforov]

Hello, Yukinobu,

I have clarified internally:
Veeam Data Platform v13, no longer requires HyperV off-host proxy to have the Hyper-V role installed, and as there is no need for nested Hyper-V anymore, the proxy does not need to be a physical machine for production use and can now be virtual machine now. Which was a specific limitation in the previous version.
Our documentation is accurate on that.
System Requirements
Off-Host Proxy

Off-host HV proxy is used to take the load off the source data processing overhead on HyperV node, including backup traffic itself, compression, encryption, etc.
So, it is now advised to use a VM in order to offload the possible additional processing overhead on a production host caused by backup procedures.

[Yukinobu]

Hi Vladimir,

Thank you for your confirmation.

In the case of CSV (SAN) Storage, is a physical machine recommended for the off-host proxy since there is a requirement to access it?

Conversely, is it okay to enable the Hyper-V role on an off-host proxy(Veeam components conflict with Hyper-V features, etc.)?
In some cases, an off-host proxy on a physical machine may also be used as the Hyper-V host to restore to.

Best Regards,
Yukinobu Asami

[vnikiforov]

Hello, Yukinobu,

For CSV (SAN) storage, off-host proxy physical machine is recommended.
The proxy definitely needs direct SAN connectivity with read access to the storage LUNs, and a VSS hardware provider supporting transportable shadow copies must be installed.
Off-Host Proxy - CSV (SAN) Important notes
Off-Host Backup

Enabling the Hyper-V role on the off-host proxy does not cause conflicts with Veeam components, but proxy host must not be part of the cluster.

Using the physical off-host proxy also as a Hyper-V host for restore targets is a valid dual-use configuration.

I will note, however, that using On-Host proxies remains our recommended configuration due to simplicity and reliability with On-Host proxies, but if resources are constrained during backup intensely, an Off-Host proxy may help alleviate some of the resource constraints.