| System | When monitoring of operating systems and OS-level resources is configured (filesystem, memory, network, paging activity) | - Filesystem utilization is too high or free space is critically low
- Available memory is critically low
- Network errors or packet drops are detected
- Paging activity is abnormally high
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| Hardware | When monitoring of physical or virtual hardware components is configured (CPU, memory, disks, fans, power supplies, network interfaces, etc.) | - A hardware component is missing (not present)
- A hardware component is degraded
- A hardware component has failed
- A hardware component is predicted to fail
- Hardware performance metrics cross warning or critical thresholds (e.g. battery level, fan speed, GPU utilization)
- Hardware errors are detected (e.g. disk or network errors)
- Connectivity or operational state is abnormal (e.g. network down, blade powered off)
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| Storage | When monitoring of storage systems is configured (controllers, pools, volumes) | - Storage controllers experience high utilization
- A storage pool is degraded or failed
- A storage volume is degraded or failed
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