Environment Required
The Cisco R42612 rack and PDUs are operable beyond the specifications of the servers or networking
equipment you are likely to install in them. Refer to the user documentation of the devices you will install to
determine the required environment for these devices.
Environment specifications PDUs are in the following table.
Table 1: PDU Environmental Specifications
Specification
Item
-40 to 60° C
Shipping or storage temperature
10 to 60° C
Operating temperature
5 to 95% (including condensing) with no droplets of
liquid
Shipping or storage relative humidity
5 to 90% (including condensing)
Operating relative humidity
0 to 50,000 feet (0 to 15,240 meters)
Shipping or storage elevation
0 to 10,000 feet (0 to 3048 meters)
Operating elevation
The unit does not produce significant sound
Acoustics
Most compute and networking equipment is designed to operate within the conditions as specified by The
American Society of Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE).
ASHRAE has published a common set of guidelines for equipment manufacturers and data center designers
to standardize on the following issues relating to a data center site:
• Operating environments for classes of equipment
• Equipment placement for optimum reliability and airflow
• Tests of performance and the operational health of the data center
• Equipment installation evaluations
• Methodology for reporting power, cooling, and environmental specifications
These guidelines were developed by an industry consortium as part of the ASHRAE Technical Committee
9.9 and are presented in the 2004 report Thermal Guidelines for Data Processing Environment. These guidelines
were updated in 2008 by the ASHRAE Environmental Guidelines for Datacom Equipment.
For information about ASHRAE and the report, see the ASHRAE website (http://www.ashrae.org).
Dust and Particles
Exhaust fans cool power supplies and system fan trays cool equipment by drawing in air and exhausting air
out through various openings in the chassis. However, fans also ingest dust and other particles, causing
contaminant buildup in the equipment and increased internal chassis temperature. A clean operating environment
Cisco R42612 Rack and RP-Series Metered Input PDU Installation Guide
12
Site Preparation
Environment Required
