Table 16. Troubleshooting
Problem indicator Component Possible cause Possible solutions
Amber LED is lit
Drive (drive
fault LED)
Drive failure Replace the failed drive. See
Chapter 5, “Replacing
components,” on page 105 for
more information.
Drive uncertified Verify the drive and part number
to ensure that it is supported by
the DS3500. See
http://www.ibm.com/systems/
storage/disk/.
storage
controller
(service action
required LED)
controller failure Replace the controller. See
Chapter 5, “Replacing
components,” on page 105 for
more information.
The controller was
placed offline by a
user or the other
controller.
Use the Subsystem Management
window to place the controller
back online. If the controller
continues going to an offline
state after being placed online,
replace the controller.
storage
controller
(battery fault
LED)
Battery unit failure Use the Storage Manager
software to confirm the failure;
then, replace the failed battery
unit.
storage
controller (SAS
link service
action LED)
SAS cable failure Replace the SAS cable.
SAS host bus
adapter failure
Check the SAS host bus adapter
in the host and replace the
adapter if necessary.
SAS port failure Replace the controller. See
Chapter 5, “Replacing
components,” on page 105 for
more information.
Front bezel
(system error
LED)
General machine
fault
A fault LED is lit somewhere on
the storage subsystem (check for
amber LEDs on components).
General machine
fault (continued)
Open the Subsystem
Management window and click
Recovery Guru to see problems
in the DS3500 configuration.
Some errors cause the system
error LED to be lit but not cause
any individual component fault
LEDs to be lit. (Drive PFA
exceeded or nominal temperature
exceeded errors are examples.)
Follow the corrective actions in
the Recovery Guru window.
162 IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide
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