# Enum - HostSystemPowerState(vim.HostSystem.PowerState)

Property of
  HostRuntimeInfo
Since
  VI API 2.5

## Enum Description

Defines a host's power state.

Enum Constants

Name | Description
--- | ---
poweredOff | The host was specifically powered off by the user through VirtualCenter. This state is not a cetain state, because after VirtualCenter issues the command to power off the host, the host might crash, or kill all the processes but fail to power off.
poweredOn | The host is powered on. A host that is entering standby mode entering is also in this state.
standBy | The host was specifically put in standby mode, either explicitly by the user, or automatically by DPM. This state is not a cetain state, because after VirtualCenter issues the command to put the host in standby state, the host might crash, or kill all the processes but fail to power off. A host that is exiting standby mode exiting is also in this state.
unknown | If the host is disconnected, or notResponding, we cannot possibly have knowledge of its power state. Hence, the host is marked as unknown.

Show WSDL type definition
<simpleType xmlns="http://www.w3.org/2001/XMLSchema" xmlns:vsan="urn:vsan" name="HostSystemPowerState"> <restriction base="xsd:string"> <enumeration value="poweredOn"/> <enumeration value="poweredOff"/> <enumeration value="standBy"/> <enumeration value="unknown"/> </restriction> </simpleType>