Symptom-To-Fru Index - IBM DS5100 Installation, User's, And Maintenance Manual

Table 56. Symptom-to-FRU index
Problem
indicator Component
Amber Needs RAID controller
Attention LED on Needs Attention
LED
Drive bypass
LED
Amber Needs Overall
Attention LED on Configuration
(continued) Needs Attention
LED (located on
interconnect-
battery unit)
Various
components
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IBM System Storage DS5100 and DS5300 Storage Subsystem: Installation, User's, and Maintenance Guide
Possible cause
RAID controller offline
RAID controller failure
Fibre-channel cable is not
attached to the storage
expansion enclosure.
No incoming signal
detected.
General system error
Multiple component failures
Possible solutions
If you have placed the controller offline, use the
DS Storage Manager client software to place it
online.
If one controller has been placed offline by the
other controller, contact IBM support. (This is the
case if you use the DS Storage Manager client
software to make repeated attempts to bring an
offline controller online, but the controller keeps
reverting back to an offline state.)
If the RAID controller Needs Attention LED is on
and the Service Action Allowed LED for that RAID
controller is lit, replace the RAID controller.
If the Service Action Allowed LED for the RAID
controller is not lit, perform additional diagnostics
to identify other component failures. Replace the
other failed components before replacing the
RAID controller.
Connect the fibre-channel cable to the enclosure
port; check other connections.
Reattach the SFPs and fibre-channel cables.
Verify that the fibre channel cables are in good
condition. For specific handling guidelines, see
"Handling fibre-optic cables" on page 48.
Verify the SFPs are working properly. Use the
wrap-plug coupler kit that ships with the storage
subsystem and the wrap-plug instructions in the
Problem Determination Guide.
Replace input and output SFPs or cables as
necessary.
Indicates that a Needs Attention LED somewhere
in the storage subsystem configuration, including
all attached storage expansion enclosures, has
turned on. (Check for amber LEDs on components
as well as all attached storage expansion
enclosures.) Use the DS Storage Manager
software to diagnose server problems.
Do not randomly replace components in the
storage subsystem. This might result in a
subsystem shutdown, causing a loss of data
availability. Use the DS Storage Manager client
program to identify the failed components. Identify
and replace the failed power supply and fan unit
components first before fixing any other failed
components.