© Copyright IBM Corp. 2000
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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
Component
Possible cause
Possible solutions
Amber LED on
Drive CRU
Drive has failed
Replace the drive that has failed.
Fan CRU
Fan failure
Replace the fan that has failed.
RAID controller Fault
LED
RAID controller has
failed
If the RAID controller Fault LED is on,
replace the RAID controller.
Expansion port bypass
LED
GBIC port empty
No corrective action is needed if the
system is properly configured.
Fibre Channel cable
is not attached to the
expansion unit
No corrective action is needed.
No incoming signal
detected
Reattach the GBICs and Fibre Channel
cables. Replace input and output GBICs or
cables as necessary.
Front panel
General system error
Indicates that a Fault LED somewhere on
the storage server has turned on. (Check
for amber LEDs on CRUs.)
Amber LED is on and
green LED off
Power-supply CRU
Power switch is
turned off or ac
power failure
Turn on all power-supply power switches.
Amber and green
LEDs on
Power-supply CRU
Power supply failure
Replace the failed power-supply CRU.
All green LEDs off
All CRUs
Subsystem power is
off
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.
AC power failure
Check the main circuit breaker and ac
outlet.
Power supply failure
Replace the power supply.
Midplane failure
Have the storage server serviced.
Amber LED flashing
Drive CRUs
Drive rebuild or
identity is in process
No corrective action is needed.
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