Start small
One micro desktop plus a supervisor is enough to learn the stack. Add nodes when power, cooling, and monitoring are dialed in.
Watch your circuit
Four micro PCs at ~60 W each is roughly 240 W continuous. Map outlets and use a PDU with metering if you are filling a rack.
Think thermals, not just PPD
A node that thermal-throttles earns less science and wears faster. Dust filters, fan cleaning, and a few inches of clearance matter.
Headless by default
Enable auto power-on in BIOS, disable sleep, and use wired Ethernet. The goal is an appliance that recovers from outages without intervention.
Monitor with FoldOps
Track PPD, temperatures, offline nodes, and pending apt updates from one dashboard instead of SSHing into every box.
Buy used, verify, then standardize
Pick one model family when possible — identical BIOS settings, spare parts, and rack rails simplify a growing farm.