Learn what is a rack diagram along with its key components, types of rack diagrams, step-by-step drawing tips, and free templates for planning, documenting, and managing data center infrastructure efficiently. Need a free Rack Diagram software? Visual Paradigm Online (VP Online) Free Edition, a FREE online diagram software that supports rack diagram, UML, org chart, family tree, ERD, floor plan, etc. With the intuitive Rack Diagram editor you can draw Rack Diagram in seconds. To make it even easier for you, we launched the free online Rack. draw. Both electronics cabinets can be visualised, as well as IT racks with servers and networking hardware, including those provided by specific vendors like APC, Cisco, Dell, F5, HP, IBM and Oracle. io editor. OpenRack is a data-driven infrastructure design platform that enables precise rack planning, equipment management, and procedural diagramming for data centers and IT environments. Professional data center planning with detailed rack visualization, precise power calculations, and AI Assistant recommendations. Calculate precise power requirements, BTU heat output, and electrical load distribution Detailed. In this guide, you'll learn how to create rack diagrams that are accurate, scalable, and easy to maintain—so you can plan smarter, troubleshoot faster, and keep your infrastructure organized. A rack diagram is a visual layout that shows how equipment like servers, switches, patch panels, and power.