My Z-Wave stack is no longer in use
My Z-Wave stack used to run on a Raspberry Pi 3, using the old All in One installer (effectively a manual install like this, on a 16 GB card, that I'd upgraded to Python 3.6. I used a Razberry board for Z-Wave control. The configuration for that instance, before it was turned off, can be found here.
To limit the risk brought by SD card corruption (a known risk with Pi3) I stored the Home Assistant database on a USB stick, and use a multi-port USB charger with sufficient power for all ports, but left one unused. The power cables were short, and high quality, to minimise issues with voltage drop. Of course, I also took many different backups to reduce the risk of losing anything.
This was one of a number of Pi3s I've got, and they're all in a Multi-Pi stackable case, to keep the footprint down. They share an HDMI cable to a nearby monitor, and an old USB keyboard I've got kicking around, because having a Pi fail to respond isn't that uncommon.
I stopped using this in September 2022, having expanded my Zigbee mesh. I may well return to Z-Wave in the future, those Sensative Guard strips are still the best design of door/window sensor I've found, but for now... Z-Wave no more.