Dc Power Supply Unit Connectors And; Dc Power Supply Led Indicators - IBM Storwize V5000 Gen2 Quick Installation Manual

Figure 10. DC power supply unit connectors and indicators
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Each power supply also contains fans that cool the enclosure. Cool air is drawn in
through the front of the enclosure. The air passes over the drives, node canisters,
and power supplies. The warmed air is ejected through the rear of each power
supply. For optimal cooling, do not obstruct the airflow and ensure that all
enclosure components or fillers are installed while the system is operational.

DC power supply LED indicators

Each power supply unit has four LED indicators. Table 8 summarizes their possible
values and meaning.
The LEDs have a comparable meaning to the LEDs on the AC power supply.
Problem diagnosis and service procedures are the same. For details, see "Powering
on the system" on page 39.
Table 8. DC power supply LED indicators
Name Label
Input status
IN
Output
status
Fault
(None)
OK
Connecting a DC power supply to a DC power source
A Storwize V5000 Gen2 enclosure that is DC powered contains two DC power
supply units (PSUs). Each unit must be connected to a suitable -48V DC power
source. To provide redundancy in a power circuit failure, connect the two PSUs to
different DC power sources.
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1 Release tab
2 Handle
3 Power supply LED indicators
4 DC power cable connector
Color State Description
Green OFF No input power detected.
ON DC input power detected.
Green OFF PSU is not providing DC output power.
ON PSU is providing DC output power.
Amber OFF No fault detected.
ON PSU fault was detected.
BLINK PSU is being identified. A fault might have been detected.
Blue N/A Not used.
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Chapter 1. Before you begin the installation
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