IBM DS3500 Installation, User & Maintenance Guide

Table 10. Troubleshooting information (continued)
Component Problem indicator Possible cause Possible solutions
All components All green LEDs off The EXP3500 is
turned off
Make sure that all power cables are connected and
that the power is on. If applicable, make sure that
the main circuit breakers for the rack are turned on.
ac or dc power
failure
Check the main circuit breaker and ac or dc outlet.
Power-supply
failure
Replace the power supply. See Chapter 5,
“Replacing components,” on page 93 for more
information.
Midplane failure Contact your IBM technical-support representative.
Hard disk drives Amber fault LED
flashing
Drive rebuild or
identity in process
No action is required.
Power supply Amber fault LED lit;
green dc power LED
off
Power supply
failure; power
supply turned off;
minimum hard disk
drives not installed
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 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.
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 hard
disk drives
One or more green
LEDs off
No activity to the
drives
No action is required.
All hard disk
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 RAID controller management software to
check the drive status. Replace the ESM.
Midplane failure Contact your IBM technical-support representative.
Front panel Power supply Make sure 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.
Chapter 6. Solving problems 133

IBM DS3500 Specifications

General

Brand	IBM
Model	DS3500
Category	Storage
Language	English