Power-On Self-Test; Understanding Event Codes; Understanding The Error Codes; Notification Levels - IBM Storwize V7000 Unified Problem Determination Manual

Table 66. Notification levels
Notification level
Error
Warning
Information

Power-on self-test

When you turn on the system, the file modules and the control enclosure node
canisters complete self-tests.
A series of tests is completed to check the operation of components and some of
the options that have been installed when the units are first turned on. This series
of tests is called the power-on self-test (POST).
If a critical failure is detected during the POST, the software is not loaded and the
fault LED is illuminated. To determine if there is a POST error on a file module or
a node canister, go to "Procedure: Understanding the Storwize V7000 Gen1 system
status using the LEDs" on page 262.
When the code is loaded, additional testing takes place, which ensures that all of
the required hardware and code components are installed and functioning
correctly.

Understanding event codes

Informational events provide information on the status of an operation.
Information events are recorded in the error event log, and depending on the
configuration, you can be notified through email, SNMP, and syslog.

Understanding the error codes

Error codes are generated by the event-log analysis and system configuration code.
Description
Error notification is sent to indicate a problem that must be
corrected as soon as possible.
This notification indicates a serious problem with the system. For
example, the event that is being reported could indicate a loss of
redundancy in the system, and it is possible that another failure
could result in loss of access to data. The most typical reason that
this type of notification is sent is because of a hardware failure, but
some configuration errors or fabric errors also are included in this
notification level. Error notifications can be configured to be sent as
a call home message to your support center.
A warning notification is sent to indicate a problem or unexpected
condition with the system. Always immediately investigate this
type of notification to determine the effect that it might have on
your operation, and make any necessary corrections.
A warning notification does not require any replacement parts and
therefore should not require involvement from your support center.
The allocation of notification type Warning does not imply that the
event is less serious than one that has notification level Error.
An informational notification is sent to indicate that an expected
event has occurred: for example, a FlashCopy operation has
completed. No remedial action is required when these notifications
are sent.
Chapter 5. Control enclosure
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