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Chapter 6. Solving problems
This chapter contains information to help you solve some of the simpler problems that
you might have with your storage server. It contains the problem symptoms and error
messages along with suggested actions to take to resolve the problem.
This chapter also provides instructions on how to obtain service and technical
assistance for your storage server and other IBM products that you might plan to use.
Troubleshooting
Always use the storage-management software to diagnose storage server problems
and component failures. You can use this table to find solutions to problems that have
definite symptoms.
Table 7. Storage server troubleshooting
Problem indicator
Amber LED on
Drive CRU
Fan CRU
RAID controller Fault
LED
Expansion port bypass
LED
Front panel
Amber LED is on and
Power-supply CRU
green LED off
Amber and green
Power-supply CRU
LEDs on
All green LEDs off
All CRUs
Amber LED flashing
Drive CRUs
© Copyright IBM Corp. 2000
Component
Possible cause
Drive has failed
Fan failure
RAID controller has
failed
GBIC port empty
Fibre Channel cable
is not attached to the
expansion unit
No incoming signal
detected
General system error Indicates that a Fault LED somewhere on
Power switch is
turned off or ac
power failure
Power supply failure
Subsystem power is
off
AC power failure
Power supply failure
Midplane failure
Drive rebuild or
identity is in process
Possible solutions
Replace the drive that has failed.
Replace the fan that has failed.
If the RAID controller Fault LED is on,
replace the RAID controller.
No corrective action is needed if the
system is properly configured.
No corrective action is needed.
Reattach the GBICs and Fibre Channel
cables. Replace input and output GBICs or
cables as necessary.
the storage server has turned on. (Check
for amber LEDs on CRUs.)
Turn on all power-supply power switches.
Replace the failed power-supply CRU.
Check that all storage-server power cords
are plugged in and the power switches are
on. If applicable, check that the main circuit
breakers for the rack are turned on.
Check the main circuit breaker and ac
outlet.
Replace the power supply.
Have the storage server serviced.
No corrective action is needed.
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