Shutdown proof

Reserve UPS time for safe NAS and home-server shutdown

For storage and services, the useful result of backup power is often time to stop cleanly rather than time to keep every device running indefinitely.

A reserve is a separate budget

Do not spend the entire battery estimate on useful runtime. Reserve explicit minutes for the devices that must notify, stop writes, shut down services, and power off in the correct order.

Verify the event path

An automatic shutdown setting is only useful after an actual power-event test demonstrates that it reaches the host, stops the intended workloads, and leaves enough battery time for the sequence to finish.

Continue planning

Turn the power concern into a visible continuity boundary.

Use the planner to keep critical load, runtime, battery reserve, and safe shutdown in one checkable baseline.

Record a controlled shutdown test

Critical load

Choose critical loads before sizing a home UPS

Runtime baseline

Translate a critical load and outage window into battery Wh

Editorial record

Maintained by Make Your Own Tools to turn “Keep critical home tech running” into a defined continuous watts, battery wh, shutdown reserve, and the next proof check. The references below provide the technical context for this planning path. Its calculation rules and planning assumptions are documented in the methodology, and affected calculations pass regression checks before the review date advances.

Last reviewed
Evidence set
2 primary references
Calculation coverage
2 affected rules checked
Read methodology →View change history ↗
Planning scope
Safe-shutdown reserve planning for home NAS, Docker hosts, and related network equipment.
Next check
Test the installed UPS integration, service stop order, filesystem state, and recovery path with the exact storage and host configuration.
Ready Business: Power Outage ToolkitFederal preparedness guidance for prioritizing critical systems and using UPS backup for on-site servers during a power outage.Open source ↗U.S. Department of Energy: Uninterruptible Power SuppliesDefines a UPS as a battery-backed power system that maintains load continuity when input power fails.Open source ↗