Table 16. Troubleshooting (continued)
Problem indicator Component Possible cause Possible solutions
One or more
green LEDs are
off
Power supplies Power cable is
disconnected or
switches are turned
off
Ensure 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 Ensure that the SAS cable
connections between the
storage enclosures and the
DS3500 storage subsystem are
made.
Front panel Power supply
problem
Ensure 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 Ensure that the SAS
connections between the
storage enclosures and the
DS3500 storage subsystem are
made.
v Ensure that all the storage
enclosures in the same channel
pair have the same enclosure
speed setting.
Chapter 6. Solving problems 165
To Next Page
Loading...
