Dell PowerStore 9000T EMC PowerStore Hardware Information Guide - Page 21

Table 18. High ambient temperature shutdown (continued) Ambient temperature Hardware fault Any Three hottest drives have average temperature of 50° C (122° F) Any Two fans fault Consequence to less than 45° C (113° F) , the system powers on.. System shuts down after five minute timer expires. System shuts down after five minute timer expires. Operating limits Table 19. Operating limits Description Temperature Humidity Temperature Gradient (disk) Altitude Compensation Limit 5°C through 35°C normal, 35°C through 40°C for 10% of the time -12°C DP and 8% to 85% RH (noncondensing) 20°C/hr 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 NOTE: 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 20. 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. Technical specifications 21