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Troubleshooting
5.3
SCSI devices are not detected
If the storage subsystem is switched on late (e.g. by plugging in the power cord),
it may mean that the SCSI devices are not detected when the system is booted.
Ê Check the connection to the power supply.
Ê Switch the system off and on again.
5.4
Incorrect SCSI ID
The backup unit does not respond with the SCSI ID noted on the label (on the
back panel of the storage subsystem), or there is an address conflict on the
SCSI bus:
Ê Check the address jumpers of the backup unit involved. Refer to the
documentation for the backup unit for help.
The address jumpers of most of the backup units are located on the back of
the device.
Ê Open the storage subsystem housing (see section "Opening the storage
subsystem housing" on page 25) and set the SCSI ID (see section "Setting
the SCSI ID" on page 20).
5.5
Fan failure
The storage subsystem is cooled by means of a fan. The fan is monitored to
make sure it does not fall below the nominal speed. If the "Local/Remote" switch
is set to "Remote" and an error occurs, the storage subsytem is switched off or
prevented from being switched on, as appropriate.
Ê Check that the ventilation slots are not covered.
Ê Disconnect the storage subsystem from the power supply for at least 30
second (disconnect the power cord) and then reconnect it.
If the error occurs again, contact your service partner.
U41181-J-Z156-1-74
SCSI devices are not detected
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