Backup External Hard Drive

How do I backup an external hard drive (I store old photos that I rarely access but i need a backup incase of the HDD failure) ?

I want to back it up to my local server and to my backblaze bucket and then occasionally, i’ll plug it in, maybe change/add/delete data and do checks/prune/backup/copy manually.

How do I setup duplicacy to backup this drive so that when it’s unplugged, duplicacy doesn’t consider it to be deleted and deletes the backup or something?

The latest release will skip the backup if the source drive is not plugged in

Even the old release would just create an empty backup in this case. It would never delete any existing backups already in the storage.