I am a HUGE advocate of Synology NAS units (no sponsorship / not getting paid for this.) I have about a dozen or more units deployed at the offices I support; as well as using one for my own company. They are easy to setup and maintain, reliable, have a ton of easily installed apps and utilities, and support every protocol and access format I could hope for. Most of the units I have deployed in offices have smaller Synology units in remote locations for off-site backups, but for smaller, one unit setups an external drive backup is an extremely smart move.

Check out this article on using a standard USB hard drive to back up your Synology NAS systems. And reach out to me at info@impactdesigns.biz if you are interested in getting a Synology setup for your office!