IBM totalstorage 326, User Reference

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Table 21. Storage controller troubleshooting
Problem indicator Component Possible cause Possible solutions
Amber LED on Drive CRU Drive has failed Replace the drive that
has failed.
Fan CRU Fan failure Replace the fan that has
failed.
RAID controller
Fault LED RAID controller has
failed If the RAID controller
Fault LED is on, replace
the RAID controller.
Expansion port
bypass LED GBIC port empty No corrective action is
needed if the system is
properly configured.
Fibre Channel cable
is not attached to
the expansion unit No corrective action is
needed.
No incoming signal
detected 1. Reattach the GBIC
and Fibre Channel
cables.
2. Replace input and
output GBIC or
cables as necessary.
Front panel General system
error Indicates that a Fault
LED somewhere on the
storage controller has
turned on. (Check for
amber LEDs on CRUs.)
Amber LED is on and
green LED off Power-supply
CRU Power switch is
turned off or AC
power failure Turn on all power-supply
power switches.
Amber and green LEDs
on Power-supply
CRU Power supply failure Replace the failed
power-supply CRU.
All green LEDs off All CRUs Subsystem power is
off Check that all
storage-controller power
cords are plugged in and
the power switches are
on. If applicable, check
that the main circuit
breakers for the rack are
turned on.
AC power failure Check the main circuit
breaker and AC outlet.
Power supply failure Replace the power
supply.
Midplane failure Have the storage
controller serviced.
Amber LED flashing Drive CRUs Drive rebuild or
identity is in process No corrective action is
needed.
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Model 326 User’s Reference