IBM DS3950, Инструкция по установке, использованию и обслуживанию, Страница: 185 / 252

Table 22. Symptom-to-FRU index (continued)
Problem indicator Component Possible cause Possible solutions
Amber LED is lit
(continued) RAID controller
(Port Bypass
LED) No incoming signal
detected 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 Fibre
Channel loopback and
female-female LC connector.
Replace either input or output
SFP modules or Fibre Channel
cables as necessary.
Incorrect enclosure
speed setting 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.
RAID controller
failure If the RAID controller Fault LED
is lit, also replace the RAID
controller.
Front panel
(Global
Summary Fault
LED)
General machine
fault A Fault LED is lit somewhere on
the storage subsystem (check for
Amber LEDs on CRUs).
General machine
fault (continued) Open the DS3950 Storage
Subsystem Management window
and click the Recovery Guru to
see problems in the DS3950
configuration.
Some errors will cause the Global
Summary Fault LED to be lit but
will not cause any individual
CRU Fault LEDs to be lit. (Drive
PFA exceeded or nominal
temperature exceeded errors are
a few examples.) Follow the
corrective actions in the Recovery
Guru window.
Fibre Channel
connection failure Check that the CRUs are
properly installed. If none of the
amber LEDs are lit on any of the
CRUs, this indicates an SFP
module transmission fault in the
storage subsystem. Replace the
failed SFP module. See the DS
Storage Manager software
documentation for more
information.
Battery unit
fault Battery unit failure Verify the failure using DS
Storage Manager Client and
replace the failing battery.
Chapter 6. Hardware maintenance
157