Hello @Sayo 

Thank you for your questions please see the answers below. 

・metadata(JSON) download from Nutanix Portal. Can I do that Hypervisor ISO file there?

   ISO file you need to download from VLSC or MSDN.

・What difference is metadata (json)  each? 

JSON only have 1 version of Hyper-V ISO each based on your downloaded ISO. The JSON file usually matches 1 of the ISO files available oim MSDN / VLSC.

・Use Hypervisor ISO file of Evaluation version, is it OK?

Not supported. 

・ISO's language adapt any languages? or English only?

All available language in the ISO. Depends which ISO you download from MSDN,. 

Regards

Sudhir 

@Sudhir9 

Thank you so much for your kindly reply.

I refer to your statement.

Regards,

@Sayo 

Thanks for the update please let me know if you have any follow-up questions.