v7.8 of the calculator introduces support for Exchange 2016! Yes, that’s right, you don’t need a separate calculator, v7.8 and later supports Exchange 2013 or Exchange 2016 deployments. Moving forward, the calculator is branded as the Exchange Server Role Requirements Calculator.
When you open the calculator you will find a new drop-down option in the Input tab that allows you to select the deployment version. Simply choose 2013 or 2016:
When you choose 2016, you will notice the Server Multi-Role Configuration option is disabled due to the fact that Exchange 2016 no longer provides the Client Access Server role.
As discussed in the Exchange 2016 Architecture and Preferred Architecture articles, the volume format best practice recommendation for Exchange data volumes has changed in Exchange 2016 as we now recommend ReFS (with the integrity feature disabled). By default, for Exchange 2016 deployments, the calculator scripts will default to ReFS (Exchange 2013 deployments will default to NTFS). This is exposed in the Export Mount Points File dialog:
The DiskPart.ps1 and CreateDag.ps1 scripts have been updated to support formatting the volume as ReFS (and disabling the integrity feature at the volume level) and enabling AutoReseed support for ReFS.
This release also improves the inputs of all dialogs for the distribution scripts by persisting values across the various dialogs (e.g., global catalog values).