Understanding Events; Understanding The Error Codes; Viewing Logs And Traces; Understanding The Storwize V7000 Unified Battery Operation For The Control Enclosure - IBM Storwize V7000 Unified Problem Determination Manual

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 system status using the
LEDs" on page 213.
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 events

The Storwize V7000 Unified system generates events, such as informational events
and configuration events. An event ID or number is associated with the event and
indicates the reason for the event.
There are different types of events:
v Informational events provide information on the status of an operation.
v Error events are generated when a service action is required. An error event

Understanding the error codes

Error codes are generated by the event-log analysis and system configuration code.
Error codes help you to identify the cause of a problem, the failing
field-replaceable units (FRUs), and the service actions that might be needed to
solve the problem.

Viewing logs and traces

The Storwize V7000 Unified clustered system maintains log files and trace files that
can be used to manage your system and diagnose problems.
You can view information about collecting CIM log files or you can view examples
of a configuration dump, error log, or featurization log. To do this, click Reference
in the left pane of the Storwize V7000 Unified Information Center and then expand
the Logs and traces section.
Understanding the Storwize V7000 Unified battery operation for the
control enclosure
Storwize V7000 Unified node canisters cache volume data and hold state
information in volatile memory.
If the power fails, the cache and state data is written to a local solid-state drive
(SSD) in the canister. The batteries within the control enclosure provide the power
to write the cache and state data to a local drive.
Note: Storwize V7000 Unified expansion canisters do not cache volume data or
store state information in volatile memory. They, therefore, do not require battery
power. If ac power to both power supplies in an expansion enclosure fails, the
enclosure powers off. When ac power is restored to at least one of the power
supplies, the controller restarts without operator intervention.
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Storwize V7000 Unified: Problem Determination Guide Version
Information events are recorded in the error event log, and depending on the
configuration, can be notified through email, SNMP, and syslog.
maps to an alert with an associated error code. Depending on the configuration,
error events can be notified through email, SNMP, or syslog.