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Rack Unit (RU)

A rack unit (RU) is a specific measurement that was developed by the Electronic Industries Association (EIA). The term refers to a measurement of approximately 1.75 inches or three threaded holes. It simplifies the process of shopping for server racks by ensuring that equipment is compatible with the specific racks that are being considered.

What Small and Midsize Businesses Need to Know About Rack Unit (RU)

Instituting an in-house IT department with servers can be a daunting task for SMBs. To simplify the process and make use of small spaces, rack units are often used.

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