IBM DS3500 Installation, User's, And Maintenance Manual page 159

Table 6-1. Troubleshooting (continued)
Problem indicator
Amber LED is lit
(continued)
Amber LED is lit and
green LED is off
Amber and green LEDs
are lit
All amber and green
LEDs are slowly
flashing
Component Possible cause
storage controller Unsupported controller
fault LED (service
action LED may
also be lit)
Front panel Fibre Channel connection
SAS connection
iSCSI connection
Battery fault Battery unit failure
The power switch is
Power supply
turned off or there is an
ac or dc power source
(Amber fault LED is
failure.
lit and both power
LEDs are not lit)
Power supply failure
Power supply
(Amber fault LED is
lit and both power
LEDs are not lit, AC
power or DC IN
LED is lit and DC
power or DC out
LED is not lit)
Check for and solve one of the following situations:
All drives
v storage enclosures are not correctly connected to the DS3500.
v DS3500 does not have the correct firmware version.
(activity and fault
LEDs are not lit)
Possible solutions
Controller configurations do not match.
Check that host daughter card and cache
memory are the same in both controllers.
Check that the CRUs are properly
installed. If no amber LEDs are lit, suspect
failure of the SFP module. Verify the
failure using the Storage Manager Client.
If all Fibre Channel connections failed,
suspect failure of the Fibre Channel host
daughter card.
Check the SAS connection to verify that
the CRUs are properly installed.
If the SAS port LED is off, suspect failure
of the SAS host daughter card.
Check the iSCSI connection to verify that
the CRUs are properly installed.
If the iSCSI port LED is off, check the
Ethernet cable or verify the link speed.
If all the iSCSI port LEDs are off, suspect
failure of the iSCSI host daughter card.
Verify the failure using the Storage
Manager Client and replace the failed
battery.
Replace the failed power supply or turn
on all power-supply switches. If this is a
dc power supply, check the disconnect
device to make sure that it is working and
is in the on position.
Replace the failed power supply. See
Chapter 5, "Replacing components," on
page 5-1 for more information.
Chapter 6. Solving problems
6-3