My backup game is pretty bad, I only have my primary copy of my data and a cloud storage copy. I was trying to think of a cheap way to have another backup, and then realized I have an Orange Pi Zero 2 and a 1TB USD SSD lying around. So I was thinking of:

• installing Debian on the OPZ2, and setting up key-authenticated SFTP (no password auth)
• connect the OPZ2 on my home network and expose a non-standard (e.g. not 22) port for SFTP
• have a subdomain point to my home network ip, and use DDNS to keep it in sync
• using Restic to remotely push password-encrypted backups to the OPZ2 via SFTP using the subdomain
• set a cron job to check diskhealth and send myself email on bad
• enable auto updates on debian and email on fail

Is this setup a bad idea? Is this a security nightmare? Any better suggestions?

Heya, I'm trying out Lemmy and kinda like the idea of hosting a Lemmy instance just for me.

I was wondering:

• What are the hardware/bandwidth requirements for a single user instance?
• I know different instances can black list each other, but can they whitelist each other too? I don't want to be automatically unable to see interact with certain instances.
• Has anyone else done this and have thoughts to share?
• What about doing the same for Mastodon?