To setup my WSE2016 I used a book called: Windows Server 2016 Essentials Installation Guide for Small Businesses, it helped a lot (the new updated 2021 version has gotten very expensive).
On your question on page 108 1st it says 1st to connect a suitable drive to the server by USB, eSATA or Thunderbolt connectors.
Launch the Dashboard, click DEVICES, highlight the server & in the rt. hand panel click Setup Backup for Server.
Not sure if you followed these steps, if you did you may have other problems.
*On mine after my 1st install I wanted to have Windows Photo Viewer so I installed that & it broke my WSE2016 so now I don't mess w/ installing anything (apps) on the WSE2016 OS at all.
Good luck & HTH
answered 01/27/2023 20:22