IBM DS5100 Installation, User's, And Maintenance Manual page 187

Table 51. Interconnect-battery unit LEDs (continued)
Legend LED
2 Power
3 Overall
Configuration
Needs
Attention
Color Normal Status Problem Status/Procedure
Green LED On = storage
subsystem is
powered on
Amber LED Off
Chapter 4. Operating the storage subsystem
Off = storage subsystem is
powered off
If the storage subsystem is
powered on but this LED remains
off, examine the power supply and
fan units, the connected PDUs,
and the connected power circuits
for any of the following conditions:
v Both power supply and fan units
are not turned on.
v A circuit breaker has tripped.
v The connected PDUs are turned
off or have been tripped.
v There is no power at the wall
circuit.
v The interconnect-battery unit is
bad.
On = A component in the storage
subsystem configuration has
developed a fault.
Inspect the Needs Attention LEDs
on the other components in the
Storage Subsystem and in all
connected storage expansion
enclosures to isolate the fault.
However, it is best practice to use
the DS Storage Manager
Subsystem Management window
to identify the cause of the
problem and use the Recovery
Guru to help fix the problems.
Some of the problems may not
cause the Needs Attention LED on
the individual FRU to light, but they
will cause this Overall
Configuration Needs Attention LED
to light. For example, a hard disk
drive that exceeds its PFA errors
will cause this LED to light, but the
drive Needs Attention LED for the
individual drive in the attached
storage expansion enclosure will
not light.
See "Troubleshooting the storage
subsystem" on page 142.
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