I have written a few posts on using Resilio Sync to replicate my personal data as a backup network. Currently I have several nodes running at home on various devices. I have one remote nodes running. It is on a VPS that I may write about in more detail separately. I had another remote Pi at a friends house for years. With the cost of the VPS being so cheap and easier to manage remotely I gave up on the extra node with my friend.
Instead I have 2 Pi’s running Resilio at home. In addition to a ODROID HC2 and instances on my laptop and NAS. Every device does not have all the data on it except for the NAS. Some of the shares are so big I had to shard them out. Only the NAS has all the data. However all of my data is replicated at least twice in the house. All, but my videos are replicated to the VPS.
I also started using Amazon Glacial Deep Freeze to backup (approx $1 per tb) some shares. Deep Freeze is so cheap my intention is to add bigger shares to backup. I just have not gotten around to it yet.
The Raspberry Pi’s photographed are the Pi 2’s (white cases) and Pi 3’s (Grey cases). The current generation of Pi’s I am running are two Pi 4’s. One with four gigs of RAM and the other with eight. I have a third Pi 4 with four gigs of RAM that I am playing around with alternative configurations on. I still have the second and third generation Pi’s. I use the third-generation ones periodically. Most recently one was a dedicated Pi-hole, however I recently stopped using it.
Pull disclosure, pictured is the older P2 and P3’s.