VMware provides preconfigured alarms for the vCenter Server system that trigger automatically when problems are detected. You only need to set up actions for these alarms.

Default VMware Alarms lists the preconfigured alarms available for the vCenter Server system.

Default VMware Alarms

Alarm Name


Cannot Connect to Network

Monitors network connectivity on a vSwitch.

Cannot Connect to Storage

Monitors host connectivity to a storage device.

Cluster High Availability Error

Monitors high availability errors on a cluster.

Datastore Usage On Disk

Monitors datastore disk usage.


This alarm controls the Status value for datastores in vSphere Client. If you disable this alarm, the datastore status is displayed as Unknown.

Exit Standby Error

Monitors whether a host cannot exit standby mode.

Health Status Changed

Monitors changes to service and extension health status.

Host Battery Status

Monitors host batteries.

Host Connection and Power State

Monitors host connection and power state.

Host Connection Failure

Monitors host connection failures.

Host CPU Usage

Monitors host CPU usage.

Host Error

Monitors host error and warning events.

Host Hardware Fan Status

Monitors host fans.

Host Hardware Power Status

Monitors host power.

Host Hardware System Board Status

Monitors host system boards.

Host Hardware Temperature Status

Monitors host temperature.

Host Hardware Voltage

Monitors host voltage.

Host Memory Status

Monitors host memory.

Host Memory Usage

Monitors host memory usage.

Host Processor Status

Monitors host processors.

Host Service Console SwapIn Rate

Monitors host service console memory swapin rate.

Host Service Console SwapOut Rate

Monitors host service console memory swapout rate.

Host Status for Hardware Objects

Monitors the status of host hardware objects.

Host Storage Status

Monitors host connectivity to storage devices.

License Error

Monitors license errors.

License Inventory Monitoring

Monitors the license inventory for compliancy.

Migration Error

Monitors whether a virtual machine cannot migrate or relocate, or is orphaned.

No Compatible Host For Secondary Virtual Machine

Monitors whether there are no compatible hosts available to place a secondary virtual machine.

Timed Out Starting Secondary Virtual Machine

Monitors timeouts when starting a Secondary virtual machine.

Virtual Machine CPU Usage

Monitors virtual machine CPU usage.

Virtual Machine Error

Monitors virtual machine error and warning events.

Virtual Machine Fault Tolerance Secondary Latency Status Changed

Monitors changes in latency status of a fault tolerance secondary virtual machine.

Virtual Machine Fault Tolerance State Changed

Monitors changes in the fault tolerance state of a virtual machine.

Virtual Machine High Availability Error

Monitors high availability errors on a virtual machine.

Virtual Machine Memory Usage

Monitors virtual machine memory usage.

Virtual Machine Total Disk Latency

Monitors virtual machine total disk latency.