Air Circulation And Cooling - IBM FlashSystem A9000R 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.