I have to remember this for next winter. Going into summer here.

I have the OS (with docker) mirrored too. So no reinstalling, just disk or other parts swapping in case of a failure. I hope. A mothboard swap is the worst downtime. I have done this and needed to fiddle with network settings due to changed net interface name to get the server up again.

I put my dockers on mirrored zfs pool and have enough spare parts in case of breakdowns.