Viewing the health status and availability of entities

You can monitor the health of your system by checking the availability statistics of your system entities using the Health statistics report.

What you should know

By monitoring the health and availability of certain resources such as server roles, video units, door controllers, intrusion detection panels, and so on, you can identify instabilities, and even prevent critical system failures.

One of the important fields in the Health statistics report is the Availability of a given entity. Availability is expressed as a percentage.

To view the health status and availability of an entity:

Open the Health statistics task.
Set up the query filters for your report. Choose one or more of the following filters:
- Event timestamp:
  Define the time range for the query. The range can be defined for a specific period or for global time units, such as the previous week or the previous month.
- Source entity:
  Source entity of the event.
- Source group:
  Source entity group of the event. Usually a role or a unit.
- Custom fields:
  Restrict the search to a predefined custom field for the entity. This filter only appears if custom fields are defined for the entity, and if the custom field was made visible to you when it was created or last configured.
Click Generate report.
The health statistics for the selected entities are listed in the report pane. If health statistics could not be calculated for a given role or entity, the reason is shown in the Calculation status column of the report pane:
- One or more events used to calculate availability are currently disabled:
  The system administrator needs to select which health events to monitor by configuring the Health Monitor role. For information about selecting which health events to monitor in Config Tool, see the Security Center Administrator Guide.
- One or more servers from the system are offline:
  The server hosting the selected role is offline, therefore, the health statistics cannot be calculated for the role.

Example

A door controller called Gym was down four times over the last week, producing 90.72% availability. From the report results, you can see that this door controller is a potential concern, and have a maintenance crew come and look at the door.