Matt,

Super thanks for your detailed and thoughtful answers. Some clarifications though . . .

1) LINUX NOT WINDOWS -- We want to use Linux as the host for CloudBerry which pumps data to the cloud. Our NAS is not Windows-based. We don't want the expense of another Windows 10 Pro software license -- and maintenance effort -- just to support CloudBerry. Please keep developing Linux. It's a self-fulfilling prophecy that if you don't develop it, it won't be used etc. etc.

2) SFTP IS LEGACY??? -- FTP is legacy, for sure. But is SFTP legacy? How else will we connect between machines securely?

3) NETWORK SHARES -- The purpose of an SFTP connection is to get away from a SMB Windows LAN connection -- which is vulnerable (e.g. via Network Share) to ransomware.

4) NAS SOFTWARE -- No concerns about NAS -- we are using NAS4Free (similar to FreeNAS). It's BSD and supports VirtualBox. We want to put CloudBerry on Linux (OpenSUSE) in VirtualBox. So we have only one machine that is our secure local backup machine AND cloud gateway. NICE!