Table of Contents
Advertisement
1
Figure 8. Direct current power supply unit connectors and indicators
1 Release tab
v
2 Handle
v
3 Power supply LED indicators
v
4 DC power cable connector
v
Each power supply unit has four LED indicators (Table 7).
Table 7. Direct current power supply LEDs
Name
Label
Color
Input
Green
IN
status
Output
Green
status
Fault
Amber
(None)
Blue
OK
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 50.
Connecting a DC power supply to a DC power source
A Storwize V3700 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.
Use the supplied cables to connect the DC PSUs to the power sources. Use only
the IBM supplied DC power cable (IBM part number 00AR087) to connect the unit
to a DC power source.
Each PSU cable must be protected by a 20A circuit breaker. These instructions
assume that the circuit breaker is separate from the DC power distribution unit.
Refer to the DC power distribution unit documentation and the circuit breaker
2
Description
No input power detected.
Off
On
Direct current input power detected.
Off
PSU is not providing DC output power.
On
PSU is providing DC output power.
Off
No fault detected.
On
PSU fault has been detected.
BLINK PSU is being identified. A fault may have been
detected.
Not used.
Chapter 1. Before you begin the installation
3
4
13
Hide quick links:
Advertisement
Table of Contents
