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1. ETERNUS DX Installation
Outlet/Socket Specifications
Outlet/Socket Specifications
This section explains the power connection specifications of the ETERNUS DX storage systems.
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Power Supply Units
The ETERNUS DX has multiple power supply units in each of its enclosure.
Using the same power requirements for all the power supply units is recommended so that the power
requirements (use of power distribution units and input voltage) do not vary in the ETERNUS DX.
●
Frontend Enclosures
Power can be supplied from four power sources because each enclosure has four power supply units.
During normal operation, each power source supplies a quarter of the necessary power.
If any of the power supply lines fails, all of the necessary power is supplied from the other power sources.
Power is supplied from two of the four power sources for each frontend enclosure: FPSU#0 and FPSU#1 for
FE#0, FPSU#2 and FPSU#3 for FE#1. The necessary power can be supplied even if one of the paired power
supply units fails.
●
Controller Enclosures, 2.5" Type Drive Enclosures, and 3.5" Type Drive Enclosures
Power can be supplied 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.
If either of the power supply lines fails, all of the necessary power is supplied from the other power source.
●
High-Density Drive Enclosures
Power can be supplied from four power sources because each enclosure has four power supply units.
During normal operation, each power source supplies a quarter of the necessary power.
If any of the power supply lines fails, all of the necessary power is supplied from the other power sources.
The necessary power can be supplied even when two power supply units fail.
■
Current Consumption
The following table shows the current consumption (guideline) of each power cord that is used for ETERNUS DX
connections.
Table 7
Current Consumption of Each Power Cord
Component name
Frontend enclosure
Controller enclosure
Drive enclosure
When power distribution units are used, make sure that the current capacity totaling the current consumption
value of power cords that connect to the enclosures does not exceed the actual usage rating of the power
distribution unit.
For details, refer to
ETERNUS DX8900 S4
ETERNUS DX8100 S4
ETERNUS DX8900 S4
2.5" type
3.5" type
High-density type
"Power Cord Connection" (page
51).
34
Voltage
AC200V
1.5A
5.6A
7.9A
2.2A
2.2A
3.3A
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