Rack units, sizing and placement

Skills you'll practise

• Convert between rack units and inches/millimetres
• Read a device's U position and height from a rack elevation
• Place heavy and light equipment in a safe, serviceable order

Course outline

1. 1.Rack units and where things goVideo · 2 min
2. 2.Counting rack unitsLesson · 10 min
3. 3.Rack types, widths and depthsLesson · 12 min
4. 4.Planning a rack elevationLesson · 12 min
5. 5.Rack units, sizing and placement: knowledge checkKnowledge check · 20 questions
6. 6.Rack units, sizing and placement: practical exerciseKnowledge check · 1 question
7. 7.Final exam6 questions · passing it completes the course, so people who already know the material can test out

Sources it draws on

The lessons and questions are written from these references, so learners can go back to the original.

• EIA/ECA-310-E: Cabinets, racks, panels and associated equipment (19-inch rack, 1U = 1.75 in)
• Your equipment vendors' installation and service guides (rail kits, PSU and BMC documentation)