IBM DS3500 User Manual

Table 17. Troubleshooting information (continued)
Component Problem indicator Possible cause Possible solutions
All components All green LEDs off The EXP3500 is
turned off
Ensure that all power cables are connected and that
the power is on. If applicable, ensure that the main
circuit breakers for the rack are turned on.
ac or dc power
failure
Check the main circuit breaker and ac outlet (ac
models). Check the -48 V dc power source and
disconnect device (dc models).
Power-supply
failure
Replace the power supply. See Chapter 5,
“Replacing components,” on page 105 for more
information.
Midplane failure Contact your IBM technical-support representative.
Drives Amber fault LED
flashing
Drive rebuild or
identity in process
No action is required.
Power supply -
ac
Amber fault LED lit;
green dc power LED
off
Power supply
failure; power
supply turned off
If the power-supply switch is on, turn off the
power supply and then turn it on again. If the
condition remains, replace the power supply.
Power supply -
ac
Amber fault LED lit;
green ac power LED
off
No ac power to
power supply
Check the ac power cord or breaker.
v If ac power is good at the source, replace the
power cord.
v If the power supply has failed, replace the power
supply.
Power supply -
dc
Amber fault LED lit;
green dc power out
LED off
Power supply
failure; power
supply turned off
If the power-supply switch is on, turn off the
power supply and then turn it on again. If the
condition remains, replace the power supply.
Power supply -
dc
Amber fault LED lit;
green dc power in
LED off
No -48 V dc power
to power supply
Check the dc power cable or disconnect device.
v If dc power is good at the source, replace the dc
power cable or the 20 A disconnect device.
v If the dc power cable and the disconnect device
are working properly, replace the power supply.
ESM Link fault amber LED
lit
SAS
communication
failure
1. Reconnect the SAS cable.
2. Replace the SAS cable.
3. If the LED is still lit, replace either the ESM or
the controller or device into which the other end
of the SAS cable is connected.
One or more
drives
One or more green
LEDs off
No activity to the
drives
No action is required.
All drives No activity to the
drives
No action is required.
Damaged or loose
SAS cables
Check the SAS cables and connections.
ESM failure Use the controller management software to check
the drive status. Replace the ESM.
Midplane failure Contact your IBM technical-support representative.
Front panel Power supply Ensure that the cables are connected and the power
supplies are turned on.
Hardware failure If any other LEDs are lit, contact your IBM
technical-support representative.
168 IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

IBM DS3500 Specifications

General

Brand	IBM
Model	DS3500
Category	Storage
Language	English