# Data Object - VsanHclFirmwareUpdateSpec(vim.host.VsanHclFirmwareUpdateSpec)

Property of
  VsanUpdateItem
Parameter to
  VsanFlashScsiControllerFirmware_Task, VsanVibInstall_Task
Extends
  DynamicData
See also
  HostSystem, VsanHclFirmwareFile
Since
  vSAN API 6.6

## Data Object Description

Specification for updating SCSI controller firmware.

Properties

Name | Type | Description
--- | --- | ---
allowDowngrade* | xsd:boolean | If set, will allow firmware downgrade. Should not be used outside of controlled and validated testing. May damage the controller. Check with vendor.
fwFiles | VsanHclFirmwareFile[] | The files to use for firmware flashing.
hbaDevice | xsd:string | The HBA Device name (e.g. vmhba0) to flash.
host | ManagedObjectReference to a HostSystem | Host onto which this Firmware should be updated.
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="VsanHclFirmwareUpdateSpec"> <complexContent> <extension base="vsan:DynamicData"> <sequence> <element name="host" type="vsan:ManagedObjectReference"/> <element name="hbaDevice" type="xsd:string"/> <element name="fwFiles" type="vsan:VsanHclFirmwareFile" maxOccurs="unbounded"/> <element name="allowDowngrade" type="xsd:boolean" minOccurs="0"/> </sequence> </extension> </complexContent> </complexType>