HP B6191-90029 manual Hardware Monitoring Terms, Term Definition

Introduction

Hardware Monitoring Overview

Hardware Monitoring Terms

The following terms are used throughout this guide. Understanding them is important when learning how the hardware event monitors work and how to use them effectively.

Table 1-1	Hardware Monitoring Terms
Term		Definition
Asynchronous event		The ability to detect an event at the time it occurs. When an
detection		event occurs the monitor is immediately aware of it. This
		method provides quicker notification response than polling.
Default monitoring		The default monitoring configuration created when the EMS
request		Hardware Monitors are installed. The default requests
		ensure that a complete level of protection is automatically
		provided for all supported hardware resources.
Event Monitoring		The application framework used for monitoring system
Service (EMS)		resources on HP-UX 10.20 and 11.x. EMS Hardware
		Monitors use the EMS framework for reporting events and
		creating PSM monitoring requests. The EMS framework is
		also used by EMS High Availability Monitors.
EMS Hardware		The monitors described in this manual. They monitor
Monitors		hardware resources such as I/O devices (disk arrays, tape
		drives, etc.), interface cards, and memory. They are
		distributed on the Support Plus Media and are managed
		with the Hardware Monitoring Request Manager
		(monconfig).
EMS High		These monitors are different from EMS Hardware Monitors
Availability (HA)		and are not described in this manual. They monitor disk
Monitors		resources, cluster resources, network resources and system
		resources. They are designed for a high availability
		environment and are available at additional cost. For more
		information, refer to Using EMS HA Monitors, which is
		available at http://docs.hp.com/en/ha.html.
Event severity level		Each event that occurs within the hardware is assigned a
		severity level, which reflects the impact the event may have
		on system operation. The severity levels provide the
		mechanism for directing event notification. For example, you
		may choose a notification method for critical events that will
		alert you immediately to their occurrence, and direct less
		important events to a log file for examination at your
		convenience. Also, when used with MC/ServiceGuard to
		determine failover criteria, severe and critical events cause
		failover.
Hardware event		Any unusual or notable activity experienced by a hardware
		resource. For example, a disk drive that is not responding, or
		a tape drive that does not have a tape loaded. When any such
		activity occurs, the occurrence is reported as an event to the
		event monitor.

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