Ambient temperature limitations
The following table lists configurations that require ambient temperature less than 35°C.
NOTE:
The ambient temperature limit must be adhered to ensure proper cooling and to avoid excess processor throttling, which
may impact system performance.
Table 31. Configuration based ambient temperature restrictions
System
Front Backplane
Processor Thermal
Design Power
Processor Heat Sink Fan Type
Ambient Restriction
PowerEdge R640
10 x 2.5 inch SAS/
SATA hard drives
8 x 2.5 inch SAS/SATA
hard drives
4 x 3.5 inch SAS/SATA
hard drives
200 W, 205 W
2 pipe 1U high
performance
High performance
fan
30°C
10 x 2.5 inch SAS/
SATA and NVMe
drives(4, 8, or 10)
165 W, 200 W, 205
W
2 pipe 1U high
performance
High performance
fan
30°C
Particulate and gaseous contamination specifications
The following table defines the limitations that help avoid any equipment damage or failure from particulate and gaseous contamination. If
the levels of particulate or gaseous pollution exceed the specified limitations and result in equipment damage or failure, you may need to
rectify the environmental conditions. Remediation of environmental conditions is the responsibility of the customer.
Table 32. Particulate contamination specifications
Particulate contamination
Specifications
Air filtration
Data center air filtration as defined by ISO Class 8 per ISO 14644-1 with a
95% upper confidence limit.
NOTE:
This condition applies to data center environments only. Air
filtration requirements do not apply to IT equipment designed to be
used outside a data center, in environments such as an office or
factory floor.
NOTE:
Air entering the data center must have the MERV11 or
MERV13 filtration.
Conductive dust
Air must be free of conductive dust, zinc whiskers, or other conductive
particles.
NOTE:
This condition applies to data center and non-data center
environments.
Corrosive dust
•
Air must be free of corrosive dust.
•
Residual dust present in the air must have a deliquescent point less than
60% relative humidity.
36
Dell EMC PowerEdge R640 Installation and Service Manual
Technical specifications
