Operating Environment Requirements - IBM XIV Gen3 Series Planning Manual

Procedure
To ensure that the installation site meets the requirements, complete the following
steps:
1. Use adequate ventilation, especially during the first 120 days of continuous
2. Keep front and rear of the rack clear of obstruction.
3. Verify that you can meet the environmental operating requirements at the air
4. Consider optimizing the air circulation and cooling for the rack by using a

Operating environment requirements

You must verify that your operating environment is compatible with the required
specifications.
With or without the rear-door heat exchanger option, the air that enters the front
door of the XIV system must meet the following requirements.
Operating (powered on)
Non-operating (powered off)
Shipping
Important: An XIV system that runs continuously must be within the specified
operating environment. An XIV system can operate at the maximum allowable
temperature for only short durations, such as might occur during a disk drive
module or power-supply unit replacement. Continuous operation above the
maximum temperature increases the probability of component failure.
Air enters at the front of the rack and leaves at the back. To prevent the air that is
leaving the rack from entering the intake of another piece of equipment, place
racks in alternate rows, in a back-to-back, and front-to-front arrangement. Align the
front of racks on a floor-tile seam, with a full line of perforated tiles immediately
in front of the rack, and with the air temperature at the front of the rack less than
27ºC (80.6ºF).
System environmental acclimation
Condensation is a normal and natural occurrence if packaging is removed at time
of delivery, during extreme cold weather delivery times.
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IBM XIV Gen3 281x-11x, 281x-21x, and 281x-314 Planning Guide
operation. Ensure that there is an average room outdoor intake air rate of 0.4
air change per hour.
intake locations.
raised floor, adjusting the floor layout, and adding perforated tiles around the
air intake areas.
v Temperature: 10 - 35°C (50 - 95°F)
v Relative humidity: 20 - 80%, non-condensing
v Maximum wet bulb temperature: 25°C (77°F)
v Maximum altitude: 2134 m (7000 ft)
v Temperature: 5 - 45°C (41 - 113°F)
v Relative humidity: 20 - 80%, non-condensing
v Maximum wet bulb temperature: 27°C (80.6°F)
v Temperature: -40 - 60°C (-40 - 140°F)
v Relative humidity: 5 - 95%, non-condensing
v Maximum wet bulb temperature: 29°C (84.2°F)