# Fault - RDMNotPreserved(vim.fault.RDMNotPreserved)

Extends
  MigrationFault
Since
  2.0

## Fault Description

The virtual machine is configured with a Raw Disk Mapping. The host only supports Raw Disk Mappings in a limited fashion. After the migration, the RDM will function correctly, but it will be indistinguishable from a virtual disk when viewing the virtual machine's properties. This change will persist even if the virtual machine is migrated back to a host with full RDM support.

This is a warning only for migrations to ESX 2.1.x hosts.

Properties

Name | Type | Description
--- | --- | ---
device | xsd:string | The name of the disk device using the RDM.
Properties inherited from MigrationFault
None
Properties inherited from VimFault
None
Properties inherited from MethodFault
faultCause, faultMessage

Show WSDL type definition
<complexType xmlns="http://www.w3.org/2001/XMLSchema" xmlns:vsan="urn:vsan" name="RDMNotPreserved"> <complexContent> <extension base="vsan:MigrationFault"> <sequence> <element name="device" type="xsd:string"/> </sequence> </extension> </complexContent> </complexType>