Lab notes

Small notes about my home lab: routers, Linux boxes and things that broke along the way.

October 2026

Moving the NAS to ZFS

Finally migrated the old mdadm array to a ZFS mirror. Scrubs are now scheduled weekly and snapshots are kept for a month.

August 2026

OSPF in a three-router lab

Notes on area design, passive interfaces and why the DR election kept surprising me.

June 2026

Cheap UPS monitoring

NUT on a Raspberry Pi, shutting down two servers gracefully when the battery drops below 30%.