Rack Requirements; Equipment Requirements; Supported Slide Rail Kits; Slide Rail Adjustment Range And Cable Management Arm Dimensions - Cisco UCS C240 M4 Installation And Service Manual

Preparing for Server Installation
When you are installing a server, use the following guidelines:
•
•
•
•
•

Rack Requirements

This section provides the requirements for the standard open racks.
The rack must be of the following type:
•
•
•

Equipment Requirements

The slide rails supplied by Cisco Systems for this server do not require tools for installation if you install
them in a rack that has square 0.38-inch (9.6 mm), round 0.28-inch (7.1 mm), or #12-24 UNC threaded
holes.

Supported Slide Rail Kits

This server supports one rail kit option: Cisco part UCSC-RAILB-M4= (ball-bearing rail kit).
Do not attempt to use a rail kit that was for the Cisco UCS C240 M3 server; the rail kit for the Cisco
UCS C240 M4 server has been designed specifically for it.

Slide Rail Adjustment Range and Cable Management Arm Dimensions

The slide rails for this server have an adjustment range of 26 to 36 inches (660 to 914 mm).
The optional cable management arm (CMA) adds additional length requirements:
•
•
Cisco UCS C240 M4 Server Installation and Service Guide
2-4
Plan your site configuration and prepare the site before installing the server. See the
Preparation Guide for the recommended site planning tasks.
Ensure that there is adequate space around the server to allow for servicing the server and for
adequate airflow. The airflow in this server is from front to back.
Ensure that the air-conditioning meets the thermal requirements listed in the
page A-1.
Ensure that the cabinet or rack meets the requirements listed in the
page 2-4.
Ensure that the site power meets the power requirements listed in the
page A-1. If available, you can use an uninterruptible power supply (UPS) to protect against power
failures.
A standard 19-in. (48.3-cm) wide, four-post EIA rack, with mounting posts that conform to English
universal hole spacing, per section 1 of ANSI/EIA-310-D-1992.
The rack post holes can be square 0.38-inch (9.6 mm), round 0.28-inch (7.1 mm), #12-24 UNC, or
#10-32 UNC when you use the supplied slide rails.
The minimum vertical rack space per server must be two RUs, equal to 3.5 in. (88.9 mm).
The additional distance from the rear of the server to the rear of the CMA is 5.4 inches (137.4 mm)
The total length of the server including the CMA is 34.4 inches (874 mm).
Chapter 2 Installing the Server
Cisco UCS Site
Server Specifications,
"Rack Requirements" section on
Server Specifications,
OL-32474-01