Table 21. Symptom-to-FRU index (continued)
Problem indicator Component
Possible cause
Possible solutions
One or more
green LEDs are
off (continued)
Several FRUs
Hardware failure
Replace the affected FRUs. If this
does not correct the problem,
replace the ESMs, followed by
the midplane. Contact an IBM
technical support representative.
The DS3950 was not
powered on, or all
fibre-channel
connections
between the EXP395
and the storage
subsystem failed.
Perform one of the following
actions:
v
Power on the storage
subsystem.
v
Verify that the fibre-channel
connections between the
EXP395 and the storage
subsystem are made.
Front panel
Power supply
problem
Make sure that the power cables
are plugged in and that the
power supplies are turned on.
Hardware failure
If any other LEDs are lit, replace
the midplane. Contact an IBM
technical support representative.
98
IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide
Summary of Contents for DS3950
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