Running the online diagnostics

If you have AIX® installed and it can be started, use this procedure to perform diagnostic procedures when directed from another procedure or by your next level of support.

About this task

When you run online diagnostics, consider the following points:
  • When AIX is installed, the support for some devices might not be automatically installed. Hence that device will not be displayed in the test list when online diagnostics are run.
  • When running diagnostics in a logically partitioned system, you must run diagnostics in the logical partition containing the resource or resources that you want to test.
The following modes are available for running the online diagnostics:
  • Service mode provides the most complete check of the system resources, but requires that no other programs are running on the system. When possible, run the diagnostics in service mode.
  • Maintenance mode allows you to check most of the available resources, with the exception of SCSI adapters, memory, processor, and the disk drive used for paging.
  • Concurrent mode allows you to run online diagnostics on some of the system resources while the system is running normal activity.