Preparing for Installation
This section contains the following topics:
Installation Warnings and Guidelines
Note |
Before you install, operate, or service a server, review the Regulatory Compliance and Safety Information for Cisco UCS C-Series Servers for important safety information. |
Warning |
IMPORTANT SAFETY INSTRUCTIONS This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071 |
Warning |
To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of: 35° C (95° F). Statement 1047 |
Warning |
The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device. Statement 1019 |
Warning |
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 250 V, 15 A. Statement 1005 |
Warning |
Installation of the equipment must comply with local and national electrical codes. Statement 1074 |
Warning |
This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock, and key, or other means of security. Statement 1017 |
Caution |
To ensure proper airflow it is necessary to rack the servers using rail kits. When using the rail kits, each server has a total of two milimeters (mm) of vertical clearance between them, one mm of clearance above the chassis, and one mm of clearance below the chassis. Although it is physically possible to install the servers directly on top of one each other (“stacking”) without the use of the rail kits, it is not a recommended practice. Stacking causes direct contact between the sheetmetal top and bottom of each server, which can cause scratching of the server sheetmetal chassis. Also, direct sheetmetal-to-sheetmetal contact, can increase the unlikekly possibility of higher component temperatures as heat conducts between the top and bottom of each server. Each server is shipped with a rail kit. We recommend that you mount your servers on rail kits when you are installing them into the rack because these kits provide the optimum vertical spacing between servers installed in the same rack. |
Caution |
Avoid uninterruptible power supply (UPS) types that use ferroresonant technology. These UPS types can become unstable with systems such as the Cisco UCS, which can have substantial current draw fluctuations from fluctuating data traffic patterns. |
When you are installing a server, use the following guidelines:
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Plan your site configuration and prepare the site before installing the server. See the Cisco UCS Site Preparation Guide for the recommended site planning tasks.
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Ensure that there is adequate space around the server to allow for accessing the server and for adequate airflow. The airflow in this server is from front to back.
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Ensure that the air-conditioning meets the thermal requirements listed in the Environmental Specifications.
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Ensure that the cabinet or rack meets the requirements listed in the Rack Requirements.
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Ensure that the site power meets the power requirements listed in the Power Specifications. If available, you can use an uninterruptible power supply (UPS) to protect against power failures.
Rack Requirements
The rack must be of the following type:
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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.
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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 Cisco-supplied slide rails.
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Because the Cisco UCS C220 M5 rack server is one rack-unit tall (1 RU), the minimum vertical space to accept the server in any rack is one rack unit (RU), which is an industry standard 1.75 in. (44.45 mm) high as defined by the EIA-310 specification. The server will not fit vertically in any rack slot that is smaller than one RU.
Supported Cisco Slide Rail Kits
The server supports the following rail kit options:
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Cisco part UCSC-RAILB-M4= (ball-bearing slide rail kit)
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Cisco part UCSC-RAILF-M4= (friction slide rail kit)
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Cisco part UCSC-CMAF-M4= (cable management arm)
Rack Installation Tools Required
The slide rails sold by Cisco Systems for this server do not require tools for installation.
Slide Rail and Cable Management Arm Dimensions
The slide rails for this server have an adjustment range of 24 to 36 inches (610 to 914 mm).
The optional cable management arm (CMA) adds additional length requirements:
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The additional distance from the rear of the server to the rear of the CMA is 5.4 inches (137.4 mm).
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The total length of the server including the CMA is 35.2 inches (894 mm).





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