Symptom-To-Fru Index - IBM DS4200 Installation, User's, And Maintenance Manual

Table 33. Symptom-to-FRU index
Problem
indicator
Amber LED is lit
136
IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
Component Possible cause
Drive CRU Drive failure
(Drive Fault
LED)
Note: The
Drive uncertified
green Drive
Activity LED
might also be
lit.
RAID controller RAID controller
(Fault LED) failure
Note:
Controller
Service Action
Controller was
Allowed LED
placed offline by a
will also be lit.
user or the other
controller.
Unsupported
controller type. For
example, a DS4700
FRU is inserted into
a DS4200 Express
chassis.
RAID controller No incoming signal
(Port Bypass detected
LED)
Incorrect enclosure
speed setting
RAID controller
failure
Possible solutions
Replace the failed drive.
Note: The amber LED on the
drive is also lit if the drive slot
has a blank drive tray inserted.
Verify the drive option and FRU
part number to verify that it is
supported by the DS4200
Express Storage Subsystem. (For
FRU part numbers, see Table 34
on page 141.)
Replace the RAID controller. See
your controller documentation for
more information. See Chapter 5,
"Replacing components," on page
105 for more information.
Use the menu function in the
DS4200 Express Subsystem
Management window to place the
controller back online. If the
controller continues going to an
offline state after being placed
online, replace the RAID
controller.
Use the Storage Manager Client
Subsystem Management window
and Recovery Guru to verify that
the correct controller FRU is
used. Replace with the correct
DS4200 Express controller FRU.
Reconnect the SFP modules and
the fibre-channel cables. Verify
the input and output SFP using
the path failure determination
instruction in the DS4000
Problem Determination Guide
and the FC loopback and
female-female LC connector.
Replace either input or output
SFP modules or fibre channel
cables as necessary.
When connecting storage
expansion enclosures to the
existing operating redundant
drive loop with a different speed
setting, the port goes into bypass
mode because mixing different
speed enclosures within the
same redundant drive
loop/channel is not supported.
If the RAID controller Fault LED
is lit, also replace the RAID
controller.