IBM 9835-415, Deployment Manual

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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)
Shipping
v Temperature: -40 to 60°C (-40 to 140°F)
v Relative humidity: 5 - 95%, non-condensing
v Maximum wet bulb temperature: 29°C (84.2°F)
Important: A FlashSystem A9000R system that runs continuously must be within
the specified operating environment.
A storage 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.
System environmental acclimation
Condensation is a normal and natural occurrence if packaging is removed at time
of delivery, during extreme cold weather delivery times.
All IBM equipment has been tested in climate chambers duplicating shipping
temperatures of - 40°C (- 40°F) to 60°C (140°F) and condensation and frost do not
impact reliability of the product.
It is highly recommended that the device not be removed from the shipping
package for at least 24 hours, in order to acclimate to the new temperature
conditions. If there are still visible signs of condensation after the initial 24 hour
wait period, acclimate the system without the shipping bag for an additional 12 -
24 hours, or until no further visible condensation remains. If package material
removal is necessary, equipment should be placed in a location away from any air
vents.
Air circulation and cooling
You can take steps to optimize the air circulation and cooling for your IBM
FlashSystem A9000R system.
Procedure
To optimize the cooling around your FlashSystem A9000R system, complete the
following steps:
1. Install the FlashSystem A9000R system on a raised floor, which provides
increased air circulation for better cooling.
For more information, see “Raised or non-raised floor considerations” on page
20.
Chapter 4. Physical installation site requirements
33