Dell PowerStore 1200T EMC PowerStore Planning Guide - Page 13

Table 7. Power requirements (continued) Requirement Description Ride-through time 10-millisecond minimum Current sharing +/- 5% of full load between power supplies Operating environment limits Table 8. Operating environment limits Description Limit Temperature 5°C through 35°C normal, 35°C through 40°C for 10% of the time Humidity -12°C DP and 8% to 85% RH (noncondensing) Temperature Gradient (disk) 20°C/hr Altitude Compensation Normal: Lower temp 1°C per 300 M above 950 M Improbable: Lower temp 1°C per 175 M above 950 M Shipping and storage requirements CAUTION: Systems and components must not experience changes in temperature and humidity that are likely to cause condensation to form on or in that system or component. Do not exceed the shipping and storage temperature gradient of 45°F/hr (25°C/hr). Table 9. Shipping and storage requirements Requirement Description Ambient temperature -40° F to 149°F (-40°C to 65°C) Temperature gradient 45°F/hr (25°C/hr) Relative humidity 10% to 90% noncondensing Elevation -50 to 35,000 ft (-16 to 10,600 m) Storage time (unpowered) Recommendation Do not exceed 6 consecutive months of unpowered storage. Base enclosure airflow The base enclosure uses an adaptive cooling algorithm that increases or decreases fan speed as the unit senses changes to the external ambient temperature. Exhaust increases with ambient temperature and fan speed, and is roughly linear within recommended operating parameters. Note that the information in the table below is typical, and was measured without cabinet front/rear doors that would potentially reduce front-to-back air flow. Table 10. Base enclosure airflow Max Airflow CFM 165 CFM Min Airflow CFM 50 CFM Max Power Usage (Watts) 850 W Site Planning 13