The documentation for the Windows client (1) almost seems like a joke. In the screenshots the text gets cut off in the UI, there's sentences that say "don't use this versioning feature we're about to talk about" and tons of text that's been striked-through. There's also zero mention if the client supports backing up open files via volume shadow snapshots which is basically requirement number one for any Windows backup client.
We're really all about the direct unix to unix connection.
The point of rsync.net is that you can log onto any unix system, anywhere, and interact with your cloud storage - with no software installation or configuration necessary.
The Windows Backup Agent works very well and has recently been updated but the documentation you are seeing reflects the fact that it is a secondary function here at rsync.net that is mostly provided for the convenience of customers in mixed environments.
1 - https://www.rsync.net/resources/howto/windows_backup_agent.h...