IBM eserver 630 6C4, Service Manual

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6. Use the HMC to power on the managed system in a full system partition by
selecting the managed system in the Contents area.
7. Right click or select the desired system in the Contents area. Next, on the menu,
choose Selected.
8. Select Power On.
9. Select the Power on Diagnostic Stored Boot list option (refer to Full System
Management Tasks in the IBM Hardware Management Console, order number
SA38-0590, for more information on full system partitions).
10. Make sure that there are no media in the devices in the media subsystem.
11. Enter any passwords, if requested.
Note: If you are unable to load the diagnostics to the point when the
DIAGNOSTIC
OPERATING INSTRUCTIONS
display, go to “Loading the Standalone Diagnostics
from CD-ROM when Connected to an HMC” on page 278.
Concurrent Mode
Use concurrent mode 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, the following resources cannot be
tested in concurrent mode:
v
SCSI adapters connected to paging devices
v
Disk drive used for paging
v
Some display adapters and graphics related devices
v
Memory (tested during POST)
v
Processor (tested during POST)
The following levels of testing exist 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 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 in to the AIX
operating system and have proper authority to issue the commands (if help is needed,
see the system operator).
Chapter 6. Loading and Using Online and Standalone Diagnostics
275