Rack Mounted Servers: Understanding 2U Height

2U Rack Mounted Server

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Question

Which of the following describes a rack mounted server that is 2 rack units (2U) in height?

Answers

Explanations

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A. B. C. D.

C.

Answer C (3.5 inches or 8.89 cm) describes a rack-mounted server that is 2 rack units (2U) in height.

In a data center or server room, servers are often mounted in racks, which are designed to hold multiple servers and other equipment in a standard form factor. The height of each piece of equipment is measured in "rack units" (U), with one U equal to 1.75 inches (4.45 cm).

A 2U server would therefore be 2 x 1.75 inches, or 3.5 inches (8.89 cm) in height. This size is a common form factor for many types of servers, including those used for web hosting, file storage, and virtualization.

Option A (2.5 inches or 6.35 cm) is too small to be a 2U server, while option B (3.0 inches or 7.62 cm) and option D (4.0 inches or 10.16 cm) are not the standard size for a 2U server. Therefore, the correct answer is option C (3.5 inches or 8.89 cm).