Rack Requirements - Cisco CDE 220 Series Hardware Installation Manual

Preparing for Server Installation
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
To ensure proper airflow it is necessary to rack the servers using rail kits. Physically placing the units
Caution
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.
Avoid UPS types that use ferroresonant technology. These UPS types can become unstable with systems
Caution
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:
•
•
•
•
•

Rack Requirements

This section provides the requirements for the standard open racks.
The rack must be of the following type:
•
Cisco Content Delivery Engine 205/220/250/280/285/420/460/475 Hardware Installation Guide
3-32
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
Specifications, page A-3.
Ensure that the cabinet or rack meets the requirements listed in the
page 3-32.
Ensure that the site power meets the power requirements listed in the
page A-3. 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.
Chapter 3 Installing the Content Delivery Engines
CDE280
"Rack Requirements" section on
CDE280 Specifications,
Cisco UCS Site