Solving Problems In The Exp3500 Storage Enclosure; Troubleshooting Information - IBM DS3500 Installation, User's, And Maintenance Manual

Solving problems in the EXP3500 storage enclosure

The following table contains troubleshooting information to help you solve some basic problems that you
might have with the EXP3500 storage enclosure.
Table 6-2. Troubleshooting information
Component Problem indicator
Drive Amber fault LED lit
ESM
Front panel
All components All green LEDs off
Drives Amber fault LED
flashing
Power supply - Amber fault LED lit;
ac green dc power LED
off
Power supply - Amber fault LED lit;
ac green ac power LED
off
Power supply - Amber fault LED lit;
dc green dc power out
LED off
Power supply - Amber fault LED lit;
dc green dc power in
LED off
ESM Link fault amber LED
lit
6-6
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide
Possible cause Possible solutions
Drive failure Replace the failed drive. See Chapter 5, "Replacing
components," on page 5-1 for more information.
Board failure Replace the failed ESM. See Chapter 5, "Replacing
components," on page 5-1 for more information.
General machine A status or fault LED is lit. Check for amber LEDs
fault on components. See "Checking the LEDs" on page
4-7.
The EXP3500 is Make sure that all power cables are connected and
turned off that the power is on. If applicable, make sure that
the main circuit breakers for the rack are turned on.
ac or dc power Check the main circuit breaker and ac outlet (ac
failure models). Check the -48 V dc power source and
disconnect device (dc models).
Power-supply Replace the power supply. See Chapter 5,
failure "Replacing components," on page 5-1 for more
information.
Midplane failure Contact your IBM technical-support representative.
Drive rebuild or No action is required.
identity in process
Power supply If the power-supply switch is on, turn off the
failure; power power supply and then turn it on again. If the
supply turned off condition remains, replace the power supply.
No ac power to Check the ac power cord or breaker.
power supply
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 If the power-supply switch is on, turn off the
failure; power power supply and then turn it on again. If the
supply turned off condition remains, replace the power supply.
No -48 V dc power Check the dc power cable or disconnect device.
to power supply
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.
SAS
1. Reconnect the SAS cable.
communication
2. Replace the SAS cable.
failure
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.