thanks, I got Qnap and will look into this.Depending on what NAS you have then Crashplan may be able to do this (without requiring mapped drives).
e.g. here is a link to set it up on QNAP NAS: https://www.qnap.com/en/how-to/tuto...mportant-data-to-the-qnap-nas-or-to-the-cloud
Veeam Endpoint Backup