Getting error "Could not fetch snapshot disk data" in backup software when doing a backup of the VM
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Getting error "Could not fetch snapshot disk data" in backup software when doing a backup of the VM

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Article ID: 392362

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Updated On: 04-04-2025

Products

VMware vSphere ESXi VMware vCenter Server VMware vCenter Server 8.0 VMware vCenter Server 7.0

Issue/Introduction

Symptom:

Getting following error on backup software: 

Failed on demand backup of vSphere VM '{VM name}'

Internal error XXX######### (Vmware.UnableFetchDiskData). Incident {uuid}}

Could not fetch snapshot disk data: Error message: GetVMDKMetadataResponse.err=16052, err_str=The specified key is not found in the disk database(err=16052)

 

Environment

vCenter 

Resolution

Workaround:

  1. Shutdown the VM
  2. Change 
    ddb.comment = ""
    to
    #ddb.comment = ""
    in the vmdk file
  3. Power on the VM, check the functionality.
  4. Attempt backup and should complete successfully.