Chapter 5. Solving problems
The following table contains troubleshooting information to help you solve some
basic problems that you might have with the EXP2500.
Table 6. Troubleshooting information
Component
Problem indicator
Possible cause
Possible solutions
Hard disk drive
Amber fault LED lit
Drive failure
Replace the failed hard disk drive. See “Replacing a
hot-swap hard disk drive” on page 30.
ESM
Board failure
Replace the failed ESM. See “Replacing an ESM”
on page 35.
Front panel
General machine
fault
A status or fault LED somewhere on the EXP2500
is lit. Check for amber LEDs on components. See
Chapter 3, “EXP2500 controls, LEDs, and power,”
on page 17.
All components
All green LEDs off
The EXP2500 is
turned off
Make sure that all EXP2500 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 “Replacing a
hot-swap power supply” on page 36.
Midplane failure
Have the EXP2500 serviced.
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
1. Install four or more hard disk drives, turn off the
power, and turn it on again.
2. 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.
See “Replacing a hot-swap power supply” on
page 36.
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. See “Replacing a hot-swap power supply”
on page 36.
Front panel
Amber
overtemperature LED
lit
Filler panel missing Make sure that the ESM filler panel is installed in
the correct ESM bay.
Environment
Turn off the system until the environment
temperature returns to within the defined operating
temperature range.
Fan failure
Replace the power supply with the failed fans.
ESM
SAS link LED off
SAS
communication
failure
1. Reconnect the SAS cable.
2. Replace the SAS cable.
3. If the LED is still off, replace the ESM or the
device into which the other end of the SAS
cable is connected.
© Copyright IBM Corp. 2010, 2011
41
Summary of Contents for System Storage EXP2512 Express Storage Enclosure
Page 2: ......
Page 10: ...viii System Storage EXP2512 and EXP2524 Installation and Maintenance Guide ...
Page 28: ...16 System Storage EXP2512 and EXP2524 Installation and Maintenance Guide ...
Page 56: ...44 System Storage EXP2512 and EXP2524 Installation and Maintenance Guide ...
Page 66: ...54 System Storage EXP2512 and EXP2524 Installation and Maintenance Guide ...
Page 70: ...58 System Storage EXP2512 and EXP2524 Installation and Maintenance Guide ...
Page 71: ......
Page 72: ... Part Number 90Y8809 Printed in USA GA32 0965 01 1P P N 90Y8809 ...