IBM DCS3860, Installation, User'S, And Maintenance Manual

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Troubleshooting problems in the DCS3860 storage system
Table 20. Troubleshooting
Problem
indicator
Component Possible cause Possible solutions
Amber LED is lit
Drive (drive
fault LED)
Drive failure Replace the failed drive. See
“Replacing components” on page
77 for more information.
Drive uncertified Verify the drive and part number
to ensure that it is supported by
the DCS3860. See
http://www.ibm.com/systems/
storage/disk
storage
controller
(service action
required LED)
controller failure Replace the controller. See
“Replacing components” on page
77 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
“Replacing components” on page
77 for more information.
Front bezel
(system error
LED)
General machine
fault
A fault LED is lit somewhere on
the storage system (check for
amber LEDs on components).
General machine
fault (continued)
Open the Subsystem Management
window and click
Recovery Guru
to see problems in the DCS3860
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.
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide