Concurrent Mode - IBM R/S6000 7012 300 Series Operator's Manual

5. After the diagnostic controller loads, DIAGNOSTIC OPERATING INSTRUCTIONS
appear on the console display.
If the system unit does not have a console display, the diagnostics run automatically and
loop on the diagnostic test until the system unit is turned off.
6. If a problem is detected while the diagnostics are loading, a flashing 888 displays in the
operator panel display. See "Appendix B. Three-Digit Display Numbers" on page B-1 for
instructions on reading the message.
7. Follow the displayed instructions to checkout the desired resources.
8. When testing is complete; use the F3 key to return to the DIAGNOSTIC OPERATING
INSTRUCTIONS.
9. If you loaded the diagnostics from the disk, press the F3 key (from a defined terminal) or
press 99 (for an undefined terminal) to shutdown the diagnostics before turning off the
system unit.
Note: Pressing the F3 key (from a defined terminal) produces a "Confirm Exit" popup

Concurrent Mode

Concurrent mode provides a way to run Online diagnostics on some of the system
resources while the system is running normal system activity.
Because the system is running in normal operation, some of the resources cannot be tested
in concurrent mode. The following resources cannot be tested in concurrent mode:
SCSI adapters connected to paging devices
The disk drive used for paging
Some display adapters
Memory
Processor.
There are three levels of testing in concurrent mode:
The share–test level tests a resource while the resource is being shared by programs
running in the normal operation. This testing is mostly limited to normal commands that
test for the presence of a device or adapter.
The sub–test level tests a portion of a resource while the remaining part of the resource
is being used in normal operation. For example, this test could test one port of a multiport
device while the other ports are being used in normal operation.
The full–test level requires the device not be assigned to or used by any other
operation. This level of testing on a disk drive may require the use of the varyoff
command. The diagnostics display menus to allow you to vary off the needed resource.
Error log analysis is done in concurrent mode when you select the Problem Determination
option on the DIAGNOSTIC MODE SELECTION menu.
To run the Online diagnostics in concurrent mode you must be logged onto the AIX
operating system and have proper authority to issue the commands (if needed, get help).
menu which offers two options: continuing with the shutdown by pressing F3; or
returning to diagnostics by pressing Enter.
For undefined terminals, pressing 99 will produce a full screen menu which offers
two options: continuing with the shutdown by pressing 99 and then Enter; or
returning to diagnostics by pressing Enter.
Using the Standalone and Online Diagnostics
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