Dell PowerStore 3000X EMC PowerStore Planning Guide - Page 10

Shipping and storage requirements, Base enclosure airflow, Environmental recovery

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Table 4. High ambient temperature shutdown Ambient temperature Hardware fault Above 45° C (113° F) None Above 50° C (122° F) None Any Three hottest drives have average temperature of 50° C (122° F) Any Two fans fault Consequence Non-critical warning generated . Critical alert generated. System shuts down after five minute timer expires. If the temperature returns 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. 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 5. 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 6. Base enclosure airflow Max Airflow CFM 165 CFM Min Airflow CFM 50 CFM Max Power Usage (Watts) 850 W Environmental recovery If the system exceeds the maximum ambient temperature by approximately 10°C (18°F), the nodes in the system begin an orderly shutdown that saves cached data, and then shut themselves down. Link control cards (LCCs) in each expansion enclosure in the system power down drives but remain powered on. If the system detects that the temperature has dropped to an acceptable level, it restores power to the base enclosures and the LCCs restore power to their drives. 10 Site planning

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Table 4. High ambient temperature shutdown
Ambient temperature
Hardware fault
Consequence
Above 45° C (113° F)
None
Non-critical warning generated .
Above 50° C (122° F)
None
Critical alert generated. System
shuts down after five minute timer
expires. If the temperature returns
to less than 45° C (113° F) , the
system powers on..
Any
Three hottest drives have average temperature of
50° C (122° F)
System shuts down after five
minute timer expires.
Any
Two fans fault
System shuts down after five
minute timer expires.
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 5. 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 6. Base enclosure airflow
Max Airflow CFM
Min Airflow CFM
Max Power
Usage (Watts)
165 CFM
50 CFM
850 W
Environmental recovery
If the system exceeds the maximum ambient temperature by approximately 10°C (18°F), the nodes in the system begin an
orderly shutdown that saves cached data, and then shut themselves down. Link control cards (LCCs) in each expansion
enclosure in the system power down drives but remain powered on.
If the system detects that the temperature has dropped to an acceptable level, it restores power to the base enclosures and the
LCCs restore power to their drives.
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Site planning