Event Notification (Hp-Ux Only) - HP 2120 User Manual

Event Notification (HP-UX Only)

The Disk Monitor, an EMS hardware event monitor, reports changes in disk status.
Depending on how the monitor is set up, it sends messages to the console, an e-mail
address, a log file, or a third-party application. These messages give early notice of a
disk problem. Events include media errors, failed read and write attempts, invalid
commands, changed operating parameters, failed diagnostics, and many others.
Event severity ranges from critical to informational:
Critical
Serious
Warning
Information
Event messages (see Figure 13) contain the following types of information:
Message Data – Date and time the message was sent, the source and destination
of the message, and the severity level.
Event Data – Date and time of the event, the host, event ID, name of the monitor,
event number, event class, severity level, hardware path, associated OS error log
entry ID.
Error Description – Narrative information indicating the component that
experienced the event and the nature of the event.
Probable Cause/Recommended Action – The cause of the event and suggested
steps toward a solution. This information should be the first step in
troubleshooting.
An event that causes data loss, host system downtime, or
other loss of service. Host system operation will be affected if
the disk system continues to be used without correction.
Immediate action is required. For example, read data could
not be recovered.
An event that may cause data loss, host system downtime, or
other loss of service if left uncorrected. Host system and
hardware operation may be adversely affected. The problem
needs repair as soon as possible. For example, the request
queue is full.
An event that could escalate to a serious condition if not
corrected. Host system operation should not be affected and
normal use of the disk system can continue. Repair is needed
but at a convenient time. For example, the bus failed to reset.
An event that is expected as part of the normal operation of
the hardware. No action is required. For example, write
protection was switched on or off.
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