I have 3 servers:
- my house
- my sister house
- my parents house
My server has a lot of services (Nextcloud and Immich the ones that use more space), the other 2 servers only have Home Assistant, Frigate and some shared folders. On my server I use Backrest to backup locally and on Wasabi, the other 2…well…are not backed up 🙈 …yet!
I was thinking to buy a couple of 14/20TB drives and install them in my parents and sister servers so that each server can backup data on the other 2. The backup will be done locally on all the servers with Backrest. How do I copy the backups across servers? Should I use Syncthing or is it better to use one repository per location on each Backrest? Or…other ideas?
Thanks!
Configure and Pre backup the drives before bringing them to family members to save yourself some bandwidth
Definitely a good suggestion!
As for the other question in thr post: If you are using btrfs or zfs I believe both of those have a send function that operates at a block level and will only send block changes rather than full file changes
Tailscale+Headscale or Zerotier, use whatever backup software you want for the local backups. Simple script to rsync backups to other sites and remove copies past a certain age.
Pretty simple, and no need to expose machines in any less than safe ways.
Why Tailscale AND Headscale? Arent’t they the same thing?
Tailscale is both a client and server. If you use only Tailscale, you have to pay for the service after so many devices are connected, which by all means support the company and do so and avoid using Headscale.
Headscale is an open source implementation of the Tailscale service, so it’s free to use with all the usual Tailscale clients published. You setup Headscale somewhere, register your Tailscale clients to it, and use it like usual. It’s just skipping the need to pay for Tailscale servers as a service, and gives you greater control over how traffic routed. Completely optional.
I have an offsite NAS where I run the Restic REST server as a docker container. I connect to it over Nebula but you could also use a traditional VPN, Tailscale, Headscale, Pangolin or whatever.
Works like a charm.
Whatever you end up with
- test a restore
- consider how to deal with the source data being corrupted / ransomed / etc, ie multiple versions
I went a little crazy and setup my own wireguard VPN network, all the remote hosts connect to the VPN and the primary server connects to each of them and pushes backups. Because I use btrfs and lots of snapshots I use btrbk, annoying to setup but now my hourly snapshots get pushed everywhere, minimal bandwidth and it flawlessly has worked for years.
I like borg with rsync.


