WD Sentinel DX4000 to USB Drive as backup

Can you not backup the server to an external USB drive?  I have a USB 3 WD MYBook connected to it, but the option to backup the server to it is not an option, however the alert that pops up states that you can!  Am I missing a step or option to enable that?

I appreciate all the help anyone can provide!

PS - I just got this server yesterday so sorry for all the newbie questions!  :slight_smile:

Thank you!

If you have the 4tb/2tb usable version you can use Windows Server Backup, to backuo to a USB drive.  Note, it will consume the disc.  Larger boxes you need a 3rd party program like Shadow Protect from STorage4 Craft.  Very Good, but not cheap