The event log initially sorts events based on sequence number. Usually, this sequence corresponds to the date and time. However, the two controller clocks in the storage system could be unsynchronized. In this case, some perceived inconsistencies could appear in the event log relative to events and the date and time shown.

Priority column

These priority values exist:

Critical
A problem exists with the storage system. However, if you take immediate action, you might prevent losing access to data. Critical events are used for alert notifications. All critical events are sent to any network management client (through SNMP traps) or to the email recipient that you configured.
Warning
An error has occurred that has degraded the performance and the ability of the storage system to recover from another error.
Informational
Non-critical information related to the storage system.

Component Type column

The component that is affected by the event. The component could be hardware, such as a drive or a controller, or it could be software, such as controller firmware.

Component Location column

The physical location of the component in the storage system.

Description column

A description of the event.

Example
Drive write failure - retries exhausted

Sequence Number column

A 64-bit number that uniquely identifies a specific log entry for a storage system. This number increments by one with every new event log entry. To display this information, click the Select columns icon.

Event Type column

A 4-digit number that identifies each type of logged event. To display this information, click the Select columns icon.

Event Specific Codes column

This information is used by our support. To display this information, click the Select columns icon.

Event Category column

Failure – A component in the storage system has failed; for example, drive failure or battery failure.
State Change – An element of the storage system that has changed state; for example, a volume transitioned to Optimal status, or a controller transitioned to Offline status.
Internal – Internal controller operations that do not require user action; for example, the controller has completed start-of-day.
Command – A command that has been issued to the storage system; for example, a hot spare has been assigned.
Error – An error condition has been detected on the storage system; for example, a controller is unable to synchronize and purge cache, or a redundancy error is detected on the storage system.
General – Any event that does not fit well into any other category. To display this information, click the Select columns icon.

Logged By column

The name of the controller that logged the event. To display this information, click the Select columns icon.

To retrieve new events from the storage system, click Refresh.

It can take several minutes for an event to be logged and become visible in the Event Log page.
To save the event log to a file:
1. Select the check box next to each event that you want to save.
2. Click Save.
  
  The file is saved in the Downloads folder for your browser with the name major-event-log-timestamp.log.
To clear events from the event log:

The event log stores approximately 8,000 events before it replaces an event with a new event. If you want to keep the events, you can save them, and clear them from the event log.
1. First, save the event log.
2. Click Clear All, and confirm that you want to perform the operation.