We document everything. Network diagrams. Password procedures. Disaster recovery plans. Most of it sits in systems nobody looks at until something goes wrong. And you know what? That is perfectly fine. Documentation is not for everyday reading. It is for emergencies.
The key is making sure it is there when you need it. Accurate. Up to date. Easy to find. When your main engineer is sick and something critical breaks, that documentation is the difference between a stressful hour and a catastrophic day. Write it like you will not be there to explain it.
