1. Types
2. vcenter
3. vm
4. hardware
5. cdrom

## vcenter vm hardware cdrom: backing spec

The `backing_spec` structure provides a specification of the physical resource backing a virtual CD-ROM device.

### Representations:

- JSON
- XML

{
"device_access_type": "EMULATION",
"host_device": "string",
"iso_file": "string",
"type": "ISO_FILE"
}
<?xml version="1.0" ?>
<ns0:BackingSpec xmlns:ns0="http://vmware.com/vcenter/vm/hardware/cdrom" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<device_access_type>EMULATION</device_access_type>
<iso_file>string</iso_file>
<type>ISO_FILE</type>
<host_device>string</host_device>
</ns0:BackingSpec>

#### Attributes:

Name | Type | Description
--- | --- | ---
Required
type | string | Backing type for the virtual CD-ROM device. Defines the valid backing types for a virtual CD-ROM device. Value is one of: ISO_FILE: Virtual CD-ROM device is backed by an ISO file. HOST_DEVICE: Virtual CD-ROM device is backed by a device on the host where the virtual machine is running. CLIENT_DEVICE: Virtual CD-ROM device is backed by a device on the client that is connected to the virtual machine console.
Optional
iso_file | string | Path of the image file that should be used as the virtual CD-ROM device backing. Optional. It is only relevant when type has value ISO_FILE. This field is optional and it is only relevant when the value of `type` is ISO_FILE.
host_device | string | Name of the device that should be used as the virtual CD-ROM device backing. Optional. It is only relevant when type has value HOST_DEVICE. If unset, the virtual CD-ROM device will be configured to automatically detect a suitable host device.
device_access_type | string | Access type for the device backing. Optional. It is only relevant when type has value [HOST_DEVICE, CLIENT_DEVICE]. If unset, defaults to EMULATION.