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Chapter 2 ETERNUS DX Disk Storage System Installation
2.6 Outlet/Socket Specifications
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Site Planning-
Copyright 2013 FUJITSU LIMITED P3AM-4822-12ENZ0
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● Ambient temperature
An ETERNUS DX Disk storage system is cooled by taking in air through the front intakes and pushing out
the exhaust air through the rear of the ETERNUS DX Disk storage system. If the intake air temperature does
not meet the ambient environment conditions, a temperature error occurs and the power of the ETERNUS
DX Disk storage system is shut down.
- Front intake air temperature
Make sure that the front intake air temperature is between 10 and 40
°C.
- Rear exhaust air temperature
For example, when the intake air temperature is 40
°C, the exhaust air temperature is 50°C or higher.
The necessary cooling capacity of air conditioning must be checked.
Check the heat generation amount and the exhaust air amount that are listed in "2.1 Installation
Specifications" (page 27) to cool the exhaust air from the ETERNUS DX Disk storage system.
2.5.2 Earthquake Resistance
Take the necessary measures (e.g. secure the rack to the floor or wall) to prevent a rack in which an ETERNUS
DX Disk storage system is installed from falling down when earthquakes occur.
Earthquake countermeasures vary depending on the installation location, the floor conditions, and the type
of rack that is used. Contact your installation contractor for more details regarding earthquake
countermeasure methods and how work should be conducted.
2.5.3 Load Bearing Capacity for Floors
Make sure that the following relationship between the load bearing capacity of the floor and the weight of
the ETERNUS DX Disk storage system is maintained.
If the condition above is not satisfied, additional measures are required to ensure sufficient load bearing
capacity. Contact your installation contractor for details about the necessary measures that must be taken.
2.6 Outlet/Socket Specifications
Power can be supplied to the ETERNUS DX Disk storage system from two power sources because each
enclosure has two power supply units.
During normal operation, each of the power sources supplies half of the necessary power.
When one of the power supply lines fails, all of the necessary power is supplied from only one power source.
Using the same power supply condition for all of the power supply units is recommended so that different
power supply conditions (such as whether power distribution units are used or not and input voltage) are not
used for the ETERNUS DX Disk storage system.
This section explains the power connection specifications of the ETERNUS DX Disk storage systems.
(Load bearing capacity of the floor) > (ETERNUS DX Disk storage system weight ÷ Installation area that
includes service areas)