Hot backup of Windows XP x64

Summary

A VM Guest from a Windows XP x64 environment does not have Volume Shadow Copy Service Quiescing.
Thus, the system needs the offline backup.

Reference

[Volume Shadow Copy Service Quiescing]
https://pubs.vmware.com/vsphere-50/index.jsp#com.vmware.datarecovery.admin.doc_20/GUID-6F339449-8A9F-48C0-BE70-91A2654A79D2.html