IBM System Storage DCS3700 Installation, User's, And Maintenance Manual page 154

Amber and green LEDs
Power supply
are lit
(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)
Fan assembly
Drive
All amber and green All drives
LEDs are slowly
(activity and fault
flashing
LEDs are not lit)
All green LEDs are off All components
Amber LED is flashing Drives (fault LED is
lit)
Front panel
132
IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Power supply failure
Fan failure
Drive not certified
Drive failure
Check for and solve one of the following situations:
v storage enclosures are not correctly connected to the DCS3700.
v DCS3700 does not have the correct firmware version.
Subsystem power is off
Power failure
Power-supply failure
Operating environment is
too hot
Midplane failure
Drive identification is in
process
One or multiple
components has
intermittent problems
Replace the failed power supply. See
"Replacing components" on page 89 for
more information.
Replace the fan assembly.
Verity the drive and part number to make
sure the drive is supported by the
DCS3700. See http://www.ibm.com/
systems/storage/disk
Use Storage Manager to identify the failed
drive; then replace the failed drive.
Make sure that all storage subsystem
power cables are connected and that the
power-supply switches are on. If
applicable, make sure that the main circuit
breakers for the rack are turned on.
Check the main circuit breaker and ac
receptacle (ac models). Check the -48 V dc
power source and disconnect device (dc
models).
Replace the power supply.
Cool down the environment.
Contact your IBM technical support
representative.
No corrective action is needed.
Use the Storage Manager Recovery Guru
menu function and the Major Event Log to
troubleshoot the problem.