Checking for Namespace
You can avoid using the queryChangedDiskAreas API on ESXi 3.5 based storage by parsing XML files for the namespace. For prepackaged methods that do this, see these SDK code samples:
Axis/java/com/vmware/samples/version/displaynewpropertieshost/DisplayNewPropertiesHostV25.java Axis/java/com/vmware/samples/version/getvirtualdiskfiles/GetVirtualDiskFilesV25.java DotNet/cs/DisplayNewProperties/DisplayNewPropertiesV25.cs DotNet/cs/GetVirtualDiskFiles/GetVirtualDiskFilesV25.cs