6.4.4 Setting the alarm conditions

1. Set the alarm conditions.

   For example, if you want to monitor the busy state of a processor for the PFM - Agent for Platform (Windows), issue a Warning alarm when the usage of the processor exceeds 80% and issue an Abnormal alarm when it exceeds 90%, you can specify the following settings:

   Record: System Overview (PI)

   Field: CPU%

   Condition: >

   Abnormal value: 90

   Warning value: 80

   You can search fields for a character string by clicking the Search Fields button. For details on searching for fields, see 6.4.4(1) Searching for fields.

   Note

   The evaluation of whether an alarm is in an abnormal condition is performed only after Warning conditions are met.

   Therefore, you must specify conditions for the Abnormal condition that will also be met for the Warning condition.

2. Click the Add button.

   The conditional expressions are added to both Abnormal condition and Warning condition.

   You can set multiple conditional expressions. Multiple conditional expressions are combined with Boolean AND operators. The alarm is issued only when all of the expressions are met.

   Note that when you select a conditional expression already added to Abnormal condition or Warning condition, and then set an alarm condition, clicking the Update button overwrites the selected conditional expression.

   Reference note:

   When you create an alarm whose conditional expression contains <, <=, >=, or >, specify the conditional expression so that the abnormal condition represents a more abnormal range than the warning condition (that is, the abnormal condition encompasses the warning condition).

   Examples are shown below.

   Example 1:

   When the value of CPU% (CPU usage) is greater than 0 and less than 100

   (A larger value is considered more abnormal)

   Conditional expression that is evaluated as intended:

   Abnormal > 90

   Warning > 80

   Conditional expression not evaluated as intended:

   Abnormal > 50

   Warning > 80

   Note: If you want to generate an alarm only for abnormal conditions, specify the same value for the abnormal and warning conditions, as follows:

   Abnormal > 90

   Warning > 90

   Example 2:

   When the value of % Free Space (free disk space) is greater than 0 and less than 100

   (A smaller value is considered more abnormal)

   Conditional expression that is evaluated as intended:

   Abnormal < 10

   Warning < 30

   Conditional expression not evaluated as intended:

   Abnormal < 60

   Warning < 30

   Note: If you want an alarm to be generated for abnormal conditions only, specify the same value for the abnormal and warning conditions, as follows:

   Abnormal < 10

   Warning < 10

   You can use alphabetical characters (upper-case and lower-case) when you specify a string for the Abnormal value or Warning value in the conditional expression. The system distinguishes between upper and lower-case characters. You can also use the wildcard character. For example, by specifying item name=*AAA*, you can monitor any string that contains the substring AAA. Note that if you want to specify a backslash sign (\) just before the wildcard character, you must specify \\.

3. Click the Next > button.

   You are directed to the New Alarm > Action window. Go to 6.4.5 Setting the actions.

   Important

   If you set alarm conditions consisting of different records (such as field 1 of record A, field 2 of record B, and so on)^#, the measurement value output function does not work properly when the alarm is restored to a normal state. In addition, the issues described below can arise. For these reasons, we recommend that you consider configuring the intended alarm monitoring by using a single record consisting of multiple fields.

   • Alarms do not occur as intended because the collection intervals differ between records A and B.

   • Management becomes complex because, for example, multiple records must be checked to identify a value that satisfies an alarm condition.

   #

   This is not supported when State changes for each record instance is selected as an alarm setting.

Organization of this subsection

• (1) Searching for fields