IBM DS3500, Installation, User'S, And Maintenance Manual

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Table 6-1. Troubleshooting (continued)
Problem indicator Component Possible cause Possible solutions
All green LEDs are off All components Subsystem power is off 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.
Power failure Check the main circuit breaker and ac
receptacle (ac models). Check the -48 V dc
power source and disconnect device (dc
models).
Power-supply failure Replace the power supply.
Operating environment is
too hot Cool down the environment.
Amber LED is flashing Drives (fault LED is
lit) Drive identification is in
process No corrective action is needed.
One or more green
LEDs are off Power supplies Power cable is
disconnected or switches
are turned off 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.
All drives Midplane failure Replace the DS3500. Contact your IBM
technical-support representative.
Several components Hardware failure Replace the affected components. If this
does not correct the problem, replace the
controllers. Contact your IBM
technical-support representative.
The DS3500 was not
powered-on, or all SAS
cable connections
between the storage
enclosures and the
DS3500 storage
subsystem failed. 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.
Front panel Power supply problem Make sure that the power cables are
connected and that the power supplies are
turned on.
Hardware failure If any other LEDs are lit, replace the
midplane. Contact your IBM
technical-support representative.
Green LED is flashing
slowly (once every 2
seconds) Drives The DS3500 was not
powered-on, or all SAS
connections between the
storage enclosures and
the DS3500 storage
subsystem have failed. 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.
6-4
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide