Concurrent Mode - IBM RS/6000 User Manual

Note: The term POST indicator refers to the Icons (graphic display) or device
6. Enter any requested password.
7. Follow any instructions to select a console.
8. After the diagnostic controller loads, DIAGNOSTIC OPERATING INSTRUCTIONS
appear on the console display.
9. Follow the displayed instructions to check out the desired resources.
10. When testing is complete, use the F3 key to return to the DIAGNOSTIC
OPERATING INSTRUCTIONS.
11. Press the F3 key (from a defined terminal) or press 99 (for an undefined terminal)
to shut down the diagnostics before turning off the system unit.
Note: Pressing the F3 key (from a defined terminal) produces a Confirm Exit menu
For undefined terminals, pressing 99 produces a menu containing two options:
v Continue with the shutdown by pressing 99, then Enter
v Return to diagnostics by pressing Enter.

Concurrent Mode

Concurrent mode provides a way to run Online diagnostics on some of the system
resources while the system is running normal activity.
Because the system is running in normal operation, some of the resources cannot be
tested. The following resources cannot be tested in concurrent mode:
v SCSI adapters connected to paging devices
v Disk drive used for paging
v Any graphics-related device if running X, CDE, or windowing environment.
v Memory
v Processor
Three levels of testing are available in concurrent mode:
v 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.
v 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.
v 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 might require the use of the varyoff
command. The diagnostics display menus allow you to vary off the needed resource.
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User's Guide
mnemonics (ASCII terminal) that are displayed while the POST is
executing.
containing two options:
v Continue with the shutdown by pressing F3.
v Return to diagnostics by pressing Enter.