Drive is not visible in
the Storage Manager
software
Several components Drive failure Replace the failed drive or drives.
SAS cable failed Replace the SAS cable.
controller failure Replace controller. See “Replacing
components” on page 89 for more
information.
Midplane failure Replace the DCS3700. Contact your IBM
technical-support representative.
A drive has an interface
problem with the ESM or
controller.
Replace the drive. See “Replacing
components” on page 89 for more
information.
Incorrect firmware
version
Make sure that the DCS3700 has the
correct firmware version.
In a dual-controller
storage subsystem, one
controller has failed, and
in the drive channel that
originates from the other
(functioning) controller,
an ESM has failed.
Replace the failed controller and ESM. See
“Replacing components” on page 89 for
more information.
Storage enclosure is not
detected
Storage subsystem Storage enclosure is not
supported
Verify that the storage enclosure is
supported by the DCS3700 storage
subsystem.
SAS cable failed Replace the SAS cable.
Chapter 6. Hardware maintenance 135
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