This section describes how to set alarm thresholds and alarm clearance thresholds for performance metrics of specific objects in a storage device. If a metric value is above (or below) the alarm threshold, DeviceManager sends an alarm to notify you of checking and handling the device fault. If a metric value is above (or below) the alarm clearance threshold, DeviceManager clears the alarm.
Parameter |
Description |
|---|---|
Metric Name |
Name of a specific object metric. [Example] Read Bandwidth (KB/s) |
Threshold Type |
Threshold type of a specific object metric. If the metric value is above or below the threshold, the system generates an alarm. The options are > and <. [Default value] > [Example] > |
Alarm Threshold |
When the value of a specific object metric reaches the value of this parameter for multiple consecutive times (multiple consecutive times refers to the value of Trigger Condition (Times)), the system generates an alarm. [Default value] -- [Example] 60 |
Alarm Clearance Threshold |
When the value of a specific object metric reaches the value of this parameter for multiple consecutive times (multiple consecutive times refers to the value of Trigger Condition (Times)), the system clears the generated alarm. [Default value] -- [Example] 50 |
Trigger Condition (Times) |
When the number of times that the value of a specific object metric reaches Alarm Threshold reaches the value of this parameter, the system generates a threshold alarm. When the number of times that the value of a specific object metric reaches Alarm Clearance Threshold reaches the value of this parameter, the system clears the generated threshold alarm. [Default value] 6 [Example] 6
NOTE:
You can determine the alarm sampling period based on the interval between two consecutive performance data samplings in the performance monitoring chart of the corresponding object performance metric.
|
Severity |
Severity of a threshold alarm. Possible values are Critical, Major, and Warning. [Default value] Warning [Example] Warning |
Threshold Status |
Switch for controlling whether a threshold is enabled. The preceding parameters can be set only after this switch is turned on. [Default value] Disabled [Example] Enabled
NOTE:
If Threshold Status for a reported alarm is Disabled, the alarm will be cleared automatically. |
Take the parameter values in the Threshold parameters table as an example. When Threshold Status for Read Bandwidth (KB/s) is Enabled, an alarm of the Warning severity will be generated if the read bandwidth (KB/s) exceeds 60 KB/s for 6 consecutive times, and will be cleared if the read bandwidth (KB/s) falls below 50 KB/s for 6 consecutive times.