Storage vMotion error: "Currently connected device" 'CD/DVD drive 1' uses backing '[datastore] SP1.ISO', which is not accessible

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• Migrating virtual machine to different datastore on the same host fails when CD ISO file is attached with error:
  
  "Currently connected device" 'CD/DVD drive 1' uses backing '[datastore] SP1.ISO', which is not accessible
   
• Performing storage vMotion fails.
• Failure occurs on hosts with NFS and VMFS datastores.
• In the /vmfs/volumes/Datastore/VMfolder/vmware.log file shows the error similar to:
  
  Currently connected device" 'CD/DVD drive 1' uses backing '[Datastore] ISO_images/Windows 7 - 64 bit - with SP1.ISO', which is not accessible"

Environment

VMware vSphere ESXi 6.0

Resolution

This issue is resolved in VMware vCenter Server 6.0 Update 3, available at VMware Downloads.

To work around this issue:

1. Detach ISO mapping 
   • Navigate to the VM object in either the vCenter or Host UI
   • Right click on the VM > edit settings
   • Look for CD/DVD drive row
   • Uncheck the "connected" box to disconnect
   • Click OK to save.
2. Power off the virtual machine.