Choose a tool for your task

Start with the question you need to answer. Each page explains inputs, a worked example and limitations. Calculators provide estimates; command generators produce text for local review.

• IPv4 subnet — Find network boundaries and host ranges.
• Nmap commands — Draft commands for authorized diagnostics; no scan runs here.
• Ansible backups — Create a baseline backup playbook for IOS, NX-OS or EOS.
• CRON scheduling — Validate five numeric fields and review scheduling examples.
• Downtime exposure — Compare revenue exposure and idle labor scenarios.
• Equipment power — Estimate watts and the equivalent heat load.
• Rack capacity — Check total free U positions; confirm physical layout separately.
• RAID capacity — Compare active-drive capacity and redundancy assumptions.
• AC/DC voltage drop — Compare copper cable lengths and sizes in a simplified model.
• PCB trace width — Estimate external trace width with a simplified equation.
• IT prompt templates — Build an editable request with review steps.
• Automation ROI — Compare time value, ongoing costs and payback.

Use the tools together

For a new rack, check physical space first, estimate equipment power next, and compare RAID capacity if storage is involved. These tools answer different parts of the plan; none validates the entire installation.

Found an unexpected result? Send the tool name, non-sensitive sample inputs, expected result and observed result so the issue can be reproduced.