Preparing For Server Installation; Installation Guidelines - Cisco UCS C240 M4 Installation And Service Manual

Chapter 2 Installing the Server

Preparing for Server Installation

This section provides information about preparing for server installation, and it includes the following
topics:
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Installation Guidelines

To prevent the system from overheating, do not operate it in an area that exceeds the maximum
Warning
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
Installation of the equipment must comply with local and national electrical codes.
Warning
Statement 1074
Caution To ensure proper airflow it is necessary to rack the servers using rail kits. Physically placing the units
on top of one another or "stacking" without the use of the rail kits blocks the air vents on top of the
servers, which could result in overheating, higher fan speeds, and higher power consumption. We
recommend that you mount your servers on rail kits when you are installing them into the rack because
these rails provide the minimal spacing required between the servers. No additional spacing between the
servers is required when you mount the units using rail kits.
Caution Avoid 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.
OL-32474-01
Installation Guidelines, page 2-3
Rack Requirements, page 2-4
Equipment Requirements, page 2-4
Slide Rail Adjustment Range and Cable Management Arm Dimensions, page 2-4
Cisco UCS C240 M4 Server Installation and Service Guide
Preparing for Server Installation
2-3