Job Management Partner 1/Performance Management User's Guide

6.9.2 Relationship between the alarm damping and alarm event issues

This section describes the relationship between the alarm damping settings and how alarm events are issued, using an example.

Reference note

The cases in this example assume that a multi-instance record is used to create an alarm. A multi-instance record is a record consisting of multiple instances collected at the same time. For example, assume a multi-instance record that checks the status of disk A and disk B. During alarm evaluation, the status of the disks is evaluated for alarms, and if either (or both) of the disks meets an alarm condition, an alarm is issued for each disk.

• (1)(c) When the alarm damping is n/n (n=n) (Always is cleared and All is selected)
• (1)(d) When the alarm damping is n/n (n=n) (Always is selected and All is selected)
• (2)(c) When the alarm damping is n/m (n<m) (Always is cleared and All is selected)
• (2)(d) When the alarm damping is n/m (n<m) (Always is selected and All is selected)

Organization of this subsection

(1) When the alarm damping is n/n (n=n)

(2) When the alarm damping is n/m (n<m)

(1) When the alarm damping is n/n (n=n)

The following combinations of Always notify and Evaluate all data check box settings are assumed. These settings can be found in the New Alarm > Main Information window or in Advanced settings in the Edit > Main Information window.

Evaluate all data	Always notify
	Cleared	Selected
Cleared	(a)	(b)
Selected	(c)	(d)

In the cases described below, the check box names are referred to as follows:

• Always: Indicates the Always notify check box.
• All: Indicates the Evaluate all data check box.

(a) When the alarm damping is n/n (n=n) (Always is cleared and All is cleared)

If Always is cleared and All is cleared, the following occurs:

• This case specifies when a change in the status of the alarm is to be triggered. This is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations.
• The alarm is reported only when the status of the alarm changes from the previously reported status.
• Among the instances that were collected at the time of reporting the alarm, the alarm status of the instance that indicates the highest severity is reported.

This functionality is illustrated by the following examples:

(b) When the alarm damping is n/n (n=n) (Always is selected and All is cleared)

If Always is selected and All is cleared, the following occurs:

• This case specifies when the alarm is to be reported. This is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations. You can use this to control the frequency of the alarm.
• The instance that indicates the highest severity at the time of reporting the alarm is reported.

This functionality is illustrated by the following examples:

(c) When the alarm damping is n/n (n=n) (Always is cleared and All is selected)

If Always is cleared and All is selected, the following occurs:

• This case specifies when the status of the alarm changes. The status change is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations.
• The alarm is reported only when the status of the alarm changes from the previously reported status.
• If the status is Warning or Abnormal, the alarm statuses of all the instances that meet the status condition at the time of reporting the alarm are reported.

This functionality is illustrated by the following examples:

(d) When the alarm damping is n/n (n=n) (Always is selected and All is selected)

If Always is selected and All is selected, the following occurs:

• This case specifies when the alarm is to be reported. This is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations. You can use this to control the frequency of the alarm.
• All of the instances that meet the Warning or Abnormal condition at the time of reporting the alarm are reported.

This functionality is illustrated by the following examples:

(2) When the alarm damping is n/m (n<m)

The following combinations of Always notify and Evaluate all data check box settings are assumed. These settings are available in the New Alarm > Basic Information window or in Advanced settings in the Edit > Basic Information window.

Evaluate all data	Always notify
	Cleared	Selected
Cleared	(a)	(b)
Selected	(c)	(d)

In the cases described below, the check box names are referred to as follows:

• Always: Indicates the Always notify check box.
• All: Indicates the Evaluate all data check box.

(a) When the alarm damping is n/m (n<m) (Always is cleared and All is cleared)

If Always is cleared and All is cleared, the following occurs:

• This case specifies when the status of the alarm changes. The status change is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations.
• The alarm is reported only when the status of the alarm changes from the previously reported status.
• Among the instances that were collected at the time of reporting the alarm, the alarm status of the instance that indicates the highest severity is reported.

This functionality is illustrated by the following examples:

(b) When the alarm damping is n/m (n<m) (Always is selected and All is cleared)

If Always is selected and All is cleared, the following occurs:

• This case specifies when the alarm is to be reported. This is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations. You can use this to control the frequency of the alarm.
• The instance that indicates the highest severity at the time of reporting the alarm is reported.

This functionality is illustrated by the following examples:

(c) When the alarm damping is n/m (n<m) (Always is cleared and All is selected)

If Always is cleared and All is selected, the following occurs:

• This case specifies when the status of the alarm changes. The status change is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations.
• The alarm is reported only when the status of the alarm changes from the previously reported status.
• If the status is Warning or Abnormal, the alarm statuses of all the instances that meet the status condition at the time of reporting the alarm are reported.

This functionality is illustrated by the following examples:

(d) When the alarm damping is n/m (n<m) (Always is selected and All is selected)

If Always is selected and All is selected, the following occurs:

• This case specifies when the alarm is to be reported. This is defined by specifying the number of times a threshold is exceeded for a specified number of evaluations. You can use this to control the frequency of the alarm.
• All of the instances that meet the Warning or Abnormal condition at the time of reporting the alarm are reported.

This functionality is illustrated by the following examples:

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