IBM xSeries 260, Руководство пользователя

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Chapter 5. Using the Stand-alone and Online Diagnostics
Sources for the Diagnostic Programs
The diagnostics consist of Stand-alone Diagnostics and Online Diagnostics.
Stand-alone Diagnostics are resident on removable media. They must be booted
before they can be run. If booted, they have no access to the AIX Error Log or the
AIX Configuration Data.
Online Diagnostics, when installed, are resident with AIX on the disk or server. They
can be booted in single user mode (called service mode), run in maintenance mode
(called maintenance mode), or run concurrently (called concurrent mode) with other
applications. They have access to the AIX Error Log and the AIX Configuration
Data.
Stand-alone and Online Diagnostics Operating Considerations
The following items identify some things to consider before using the diagnostics.
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Run Online Diagnostics in Service Mode when possible, unless otherwise
directed. The Online Diagnostics perform additional functions, compared to
Stand-alone Diagnostics. This ensures that the error state of the system is
captured in NVRAM for your use in fixing the problem. The AIX error log and
certain SMIT functions are only available when diagnostics are run from the disk
drive.
Ÿ
When running Online Diagnostics, device support for some devices may not
have been installed. If this is the case, that device does not appear in the
resource list.
Ÿ
When running Stand-alone Diagnostics, device support for some devices may be
contained on supplemental diagnostic media. If this is the case, the device does
not appear in the resource list when running diagnostics unless the supplemental
media has been processed.
Ÿ
Support for some tty terminals is optionally installed. If you attach a tty terminal
to a system to run diagnostics beware that it may not work properly since the
AIX support for the terminal may not be installed.
Selecting a Console Display
When you run Stand-alone Diagnostics and under some conditions Online
Diagnostics, you need to select the console display. The diagnostics display
instructions on any graphics display and the terminal attached to the S1 port.
Chapter 5. Using the Stand-alone and Online Diagnostics
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