Remote backup of SD card for an Orange Pi?

[Geoffrey Schaller]

I have a pair of Orange Pi 3's acting as redundant PiHoles on my home network. After a bit of tinkering and configuring, I have them set up the way I want, and would like to keep them that way.

 

Of course, a good backup plan is essential to this.  Looking online, I found Image-Utils for Raspberry Pi, but that is limited in support for only the Raspbian OS.

 

Is there a good system out there to make a cloneable image of an SD card in an Orange Pi, either from the Pi itself to a remote source (NFS mount, etc.), or from a remote source pulling from the Pi?  I'd like to schedule this as a CRON job, so that in the event of a hardware failure, I can just restore the image to a new SD card and deploy it with minimal loss.

 

Thank you!