The System Health dashboard provides an overview of all devices health states based on metrics. 

The dashboard is composed of multiple cards divided into groups(optional) to display the health of a device.

In addition, the dashboard displays the DPOD health state.

Assumptions:

• The existing alerts infrastructure (with additional few more fields) will provide all data and logic to decide if a sample should be alerted and if it considers an error or warning or good.
• The alerts mechanism will be the only source of current and future metrics. New fields: Is alert used as health metric, warning threshold, damage points
• Any health metric must be based on a detailed investigation screen

Prerequisites:

Metric:

• List of default metrics:
• The user can define whether a metric is part of the system health by selecting the "System Health Metric" option 
  • You may edit the metric setting from [Manage → Alert → Setup Alerts →  Edit Alert] 

Device Health Settings:

• For each device, the user can define whether the device is displayed in the System Health dashboard, Damage Points Threshold, Total Warnings Threshold
• For each device, the user can set thresholds and damage points per health metric. - TODO add link to device settings

Device Group Settings:

• For each device, the user can define the device group and the display order -  TODO add link to device groups

System Parameters (DB) - default values for:

• "System Health Dashboard Sample Time Range (min.)" - default to 5 minutes.

Device Card description:

• Health states:

Icon	description
	Good
	Warning
	Error
	No metrics samples
+ background color of card is red	Critical

• A single card to display the health of a device - includes:
  • Big icon to indicate system health based on the metrics in the last X (System Parameter) minutes
    • If  no metrics found then health is critical - the device is dead and marked as Critical!
    • If  the "Device Availability" metric last sample is Error or all samples are Error within the last X minutes, the device is marked as Critical.
    • If one error or more are within the last X minutes then device health is marked as Error (no matter the time order of system health)
    • If no errors found but some warning exists then
      • If total damage points for all metrics is bigger than the damage points for a device(for a specific time range) to sustain then device health is Error.
      • If total of warning is bigger than number of warning found for a device than device health is Error
      • else the device health is Warning
    • If no Errors or Warnings found then device health is Good
  • Small icons to display past hour health - using the same logic as the current health
• Clicking a device card should direct to the device health dashboard

• Device Health Dashboard (drill-down)
  
  • A series of charts to display metric values per device - each metric with its own chart over time
    • Each chart is of "Scatter" type, divided to 4 parts (each part represents 15 minutes)
    • Each point in the graph should display the right color (green for Good, red for Error etc.) and display the value in the tooltip of the point
    • All points should overlap a little so the display is compact and looks like a thick line built of points:
      
    • Clicking on a metric graph will dispatch the user to further investigation in one of the product existing analytics dashboards