IBM DS3500 Installation, User's, And Maintenance Manual page 160

Table 6-1. Troubleshooting (continued)
Problem indicator
All green LEDs are off
Amber LED is flashing
One or more green
LEDs are off
Green LED is flashing
slowly (once every 2
seconds)
6-4
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide
Component Possible cause
All components Subsystem power is off
Power failure
Power-supply failure
Operating environment is
too hot
Drives (fault LED is Drive identification is in
lit) process
Power supplies Power cable is
disconnected or switches
are turned off
All drives Midplane failure
Several components Hardware failure
The DS3500 was not
powered-on, or all SAS
cable connections
between the storage
enclosures and the
DS3500 storage
subsystem failed.
Front panel Power supply problem
Hardware failure
Drives The DS3500 was not
powered-on, or all SAS
connections between the
storage enclosures and
the DS3500 storage
subsystem have failed.
Possible solutions
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.
No corrective action is needed.
Make sure that the power cables are
connected (ac or dc) and that the
disconnect device (dc only) and the
power-supply switches are turned on.
Replace the DS3500. Contact your IBM
technical-support representative.
Replace the affected components. If this
does not correct the problem, replace the
controllers. Contact your IBM
technical-support representative.
Perform one of the following actions:
v Power-on the storage subsystem.
v Make sure that the SAS cable
connections between the storage
enclosures and the DS3500 storage
subsystem are made.
Make sure that the power cables are
connected and that the power supplies are
turned on.
If any other LEDs are lit, replace the
midplane. Contact your IBM
technical-support representative.
Perform one of the following actions:
v Power-on the storage subsystem.
v Make sure that the SAS connections
between the storage enclosures and the
DS3500 storage subsystem are made.
v Make sure that all the storage
enclosures in the same channel pair
have the same enclosure speed setting.