Dell PowerEdge R340 EMC PowerEdge R340 Technical Specifications Guide - Page 13

Table 20. Expanded operating temperature specifications(continued) Expanded operating temperature Specifications up to 45°C for a maximum of 1% of its annual operating hours. For temperatures 40°C- 45°C, derate maximum allowable temperature by 1°C per 125 m (1°F per 228 ft) above 950 m (3.117 ft). NOTE: When operating in the expanded temperature range, the performance of the system may be impacted. NOTE: When operating in the expanded temperature range, ambient temperature warnings may be reported on the System Event Log. Expanded operating temperature restrictions • Do not perform a cold startup below 5°C. • The operating temperature specified is for a maximum altitude of 950m for Fresh Air Cooling. • Redundant power supply units are required. • Four redundant system fans are required. • GPU is not supported. • Support for up to 80W processor. • Non-Dell qualified peripheral cards and/or peripheral cards greater than 25 W are not supported. • Tape backup unit is not supported. Particulate and gaseous contamination specifications The following table defines the limitations that help avoid any damages to the IT equipment and/or, or both failure from particulate and gaseous contamination. If the levels of particulate or gaseous pollution exceed the specified limitations and results in equipment damage or failure, you must rectify the environmental conditions. Remediation of environmental conditions is the responsibility of the customer. Table 21. Particulate contamination specifications Particulate contamination Air filtration Specifications 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 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 nondata 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. NOTE: This condition applies to data center and nondata center environments. Technical specifications 13