

Remember that RAID and redundancy is not backup.
Try to 3-2-1, or something similar/better, if you can.
I am fairly sloppy here, and I am also very cheap. I have multiple copies in my home for important stuff (mainly Immich), the in use copy being on SSD and a few backups on spinning rust. I have a raspberry pi with an external HDD at family’s place, with a daily rsync+snapshot, for off site backups.
Of course, I’ve never had a catastrophic failure, so who knows how smooth that would be…







You can/could also find Coffee HOWTO in your distro’s HOWTO package. (I found a reference back to v0.5 of the document in 1998.)
Has simple schematics to get you started for the hardware, using the parallel port to toggle relays.
It’s a very neat little document, and inspired me to write a simple kernel module so I could
echo 1 | sudo tee /sys/whatever/coffee0to turn pin 0 high on the parallel port. (This is silly, and it’s much easier to just do things in user space!)