Events and event messages
When an event occurs in a storage system, an event message is recorded in the system’s event log and, depending on the system’s event
notification settings, can also be sent to users (using email) and host-based applications (using SNMP or SMI-S).
NOTE: A best practice is to enable notifications to be sent for events having severity Warning and higher.
Each event has a numeric code that identifies the type of event that occurred, and has one of the following severities:
• Critical: A failure occurred that might cause a controller to shut down. Correct the problem immediately.
• Error: A failure occurred that might affect data integrity or system stability. Correct the problem as soon as possible.
• Warning: A problem occurred that might affect system stability but not data integrity. Evaluate the problem and correct it if necessary.
• Informational: A configuration or state change occurred, or a problem occurred that the system corrected. No immediate action is
required. In this document, this severity is abbreviated as “Info.”
• Resolved: The condition that caused an event to be logged has been resolved.
An event message might specify an associated error code or reason code, which provides additional detail for technical support. Error
codes and reason codes are outside the scope of this guide.
Topics:
• Event descriptions
• Events
• Events (continued)
• Events (continued)
• Events sent as indications to SMI-S clients
• Using the trust command
Event descriptions
This section describes event messages that may be reported during system operation and specifies any actions recommended in response
to an event.
This section describes all event codes that exist as of this publication. Depending on your system model and firmware version, some
events described in this document may not apply to your system. The event descriptions should be considered as explanations of events
that you do see. They should not be considered as descriptions of events that you should have seen but did not. In such cases those
events probably do not apply to your system.
In this section:
• The term disk group refers to either a vdisk for linear storage or a virtual disk group for virtual storage.
• The term pool refers to either a single vdisk for linear storage or a virtual pool for virtual storage.
Resources for diagnosing and resolving problems
For further information about diagnosing and resolving problems, see the troubleshooting chapter and the LED descriptions appendix in
your product’s Hardware Installation and Maintenance Guide.
For a summary of storage events and corresponding SMI-S indications, see Events sent as indications to SMI-S clients.
Events
Number
Severity Description/Recommended actions
1 Warning The disk group is online but cannot tolerate another disk failure.
• If the indicated disk group is RAID 6, it is operating with degraded health due to the failure of two disks.
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64 Events and event messages
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