# Data Object - VirtualPrecisionClockSystemClockBackingInfo(vim.vm.device.VirtualPrecisionClock.SystemClockBackingInfo)

Extends
  VirtualDeviceBackingInfo
Since
  vSphere API 7.0

## Data Object Description

The VirtualPrecisionClockSystemClockBackingInfo data object contains information about using host system clock as the backing reference clock for this virtual device.

Properties

Name | Type | Description
--- | --- | ---
protocol* | xsd:string | The time synchronization protocol used to discipline system clock. See HostDateTimeInfoProtocol for valid values.
Properties inherited from VirtualDeviceBackingInfo
None
Properties inherited from DynamicData
None

*Need not be set
Show WSDL type definition
<complexType xmlns="http://www.w3.org/2001/XMLSchema" xmlns:vsan="urn:vsan" name="VirtualPrecisionClockSystemClockBackingInfo"> <complexContent> <extension base="vsan:VirtualDeviceBackingInfo"> <sequence> <element name="protocol" type="xsd:string" minOccurs="0"/> </sequence> </extension> </complexContent> </complexType>