The best backup strategy

Hello everyone!

I'm using OMV since 2019 and I don't plan on changing it for the foreseeable future. My machine has an i3 8100, 24 GB RAM and 6 SATA HDDs.

I'm using snapraid for redundancy but I struggle with an optimal backup solution.

What I need:

- a program/script that would start when I plug in an external HDD, does its thing (and maybe notify me when it's done, so I can unplug the drive). I don't want the drive connected at all times, since a ransomware would easily destroy the backup if the drive is connected.

- incremental backups

The USB backup plugin sounds good, but it doesn't do incremental backups.

Borgbackup does incremental backups, but it works with existing omv shares, so I can't insert and remove the drive as I please. Since a share is "referenced" in omv, it can't be mounted before the backup runs and unmounted afterwards.

How should I handle it?

Is the viable solution a second device that would pull the backups in? I have a RaspberryPi 3B, but I've read that they are not reliable when it comes to USB storage (the external HDD has its own power).

Thanks everyone and especially @votdev and @ryecoaaron for their amazing work

Quote from macom

You could write your own script and use a udev rule to start it once the USB drive is plugged in.

Sadly my scripting skills are very limited and I don't even know what udev is.

I'll give the Pi a try using borgbackup, then.

Thanks for your reply!