The site is now running on a new Raspberry Pi 4. The OS chosen was Raspbian GNU/Linux for it’s support and stability. Although the server has 4GB of memory the running command-line only installation uses under 200MB! It is also running on a 1200VA UPS which means that it can go for quite some time in a power outage. SD card cell wear shouldn’t be a concern because of the use of ramdisks and extending the commit time for the root filesystem.