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Table 11. Storage server troubleshooting (continued)
Problem
indicator
Component
All green LEDs off All CRUs
Amber LED
Drive CRUs
flashing
One or more
Power supply
green LEDs off
CRUs
All drive CRUs
Front panel
Battery
Cache active
Host loop
Possible cause
Possible solutions
Subsystem
Check that all storage-server
power is off
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
Replace the power supply.
failure
Midplane failure
Have the midplane replaced
(service technician only).
Drive identify is in
No corrective action is needed.
process
Power cord
Make sure that the power cord is
unplugged or
plugged in and the power-supply
switches turned
switches are turned on.
off
Midplane failure
Have the midplane replaced
(service technician only).
Power supply
Make sure that the cords are
problem
plugged in and power supplies
are turned on.
Hardware failure
If any other LEDs are on, replace
the midplane (service technician
only).
Battery failure
Replace the battery.
The cache is
Use the storage-management
disabled
software to enable the logical
drive read and write cache
settings.
The cache
Replace the RAID controller.
memory has
failed
The cache
Use the storage-management
battery has failed
software to check and replace
the battery.
There is no I/O
Generate I/O.
Host or switch is
Check if host or switch is on.
off or has failed
Replace attached devices that
have failed.
Fibre-channel
Ensure that the fibre-channel
cable has failed
cables are undamaged and
properly connected.
SFP has failed
Ensure SFP is seated properly;
replace SFP.
RAID controller
Ensure that the unit is powered
has no power or
on. Replace RAID controller.
has failed
Chapter 6. Solving problems
99
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