Help with external snapshots as backups

Hi, I have a win10 guest on a fedora32 system and have some questions as I explore using external snapshots as a form of backup in case of a Windows failure (as in, it won't boot or is completely irrecoverable) as well as revision control (to be able to rollback changes after a failed app install, etc). The first hit on Google for external snapshots involves a RHEL7 document that talks about how it's not officially supported. The current RHEL8 docs don't include any references to snapshots. The fedora docs I've found are many years old - I'm just not sure if they're still applicable. Where can I find the current docs for fedora32? - If I've already created a live internal snapshot, can I then create an external safely? Are all changes currently being written to this internal snapshot now? - Can external snapshots be used for backup? Perhaps there are predefined steps for doing this that I can follow? This is the procedure I'm currently using. I've made a backup of the original image - can I now just continue to backup the snapshots in the eventuality of a crash, then use this original image backup and the snapshots to restore it? I suppose I would also periodically merge the snapshots back into the a single snapshot to ease the process? # virsh snapshot-create-as --domain dave-win10a win10a-state01 --diskspec vda,file=/var/lib/libvirt/images/vm_snapshots/disk-overlay.qcow2,snapshot=external --memspec file=/var/lib/libvirt/images/vm_snapshots/mem-overlay.qcow2,snapshot=external --atomic Domain snapshot win10a-state01 created # ls -lh vm_snapshots/ total 3.3G -rw------- 1 qemu qemu 196K Jul 11 12:32 disk-overlay.qcow2 -rw------- 1 root root 3.3G Jul 11 12:32 mem-overlay.qcow2 Thanks, Alex