IBM DS8900F, Introduction And Planning Manual

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Table 50. Machine fan location
DS8900F Fan Location Machine Location Intake Location Exhaust Location
Entire machine Entire Front covers Rear covers
Power complex Bottom Front covers Rear covers
Operating environment requirements
You must meet specific operating environment requirements at all the air intake locations of your storage
system.
The operating points vary depending on the state of the system. The system can be in the following
states:
• Powered on
• Powered off
• In storage
Powered on
Plan for the operating ranges and recommended operating points of the storage system.
Table 51 on page 99 provides the operating ranges for your storage system when its power is on.
Table 51. Operating extremes with the power on
Measurement
Value
Altitude 0 - 2133 m (0 - 7000 ft)
Dry bulb temperature 16 - 32°C (60 - 90°F)
Relative humidity 20 - 80%
Wet bulb temperature (maximum) 23°C (73°F)
Table 52 on page 99 provides the optimum operating points for your storage system with its power on.
Table 52. Optimum operating points with the power on
Measurement
Value
Temperature 22°C (72°F)
Relative humidity 45%
Table 53 on page 99 provides the operating ranges for a storage system with power on.
Table 53. Optimum operating ranges with power on
Measurement
Value
Temperature 16 - 32°C (60 - 90°F)
Relative humidity 40 - 50%
Powered off
Plan for the required temperature and humidity ranges when the storage system is off.
Table 54 on page 100 provides the temperatures and humidity requirements for your storage system
when the power is off.
Chapter 6. Delivery and installation requirements 99