Dell SD7000-S Owner's Manual page 22

Expanded operating temperature restrictions
22
For temperatures between 40°C and 45°C, de-rate
maximum allowable dry bulb temperature by 1°C
per 125 m above 950 m (1°F per 319 ft).
• Processors of 55 W and 65 W are not
supported.
• Do not perform a cold startup at less than 5°C.
• Allow processor performance degrade.
• Non-redundant PSUs are not supported.
• Non-Dell qualified peripheral cards and/or
peripheral cards are not supported.
• Maximum altitude for the operating
temperature must be 3050 m (10,000 ft).