Hardware Pi-hole is very lightweight as it only handles DNS queries and returns a blank HTML file so it doesn’t need much processing power. ~52MB of free space 512 MB RAM Software Pi-hole will run on most Debian-based distro’s and is the preferred platform for it. We officially support the following: Raspbian: Jessie/Stretch Ubuntu: 16.04 / 16.10 Debian: 8 / 9 Fedora 26 CentOS: 7 (not ARM)