You could use a batch file to run your
Xcopy command with the verify, followed by a check of the error level returned by Xcopy to determine if the files copied successfully or not. If they did, delete the source.
From the Xcopy documentation:
0 Files were copied without error.
1 No files were found to copy.
2 The user pressed CTRL+C to terminate xcopy.
4 Initialization error occurred. There is not
enough memory or disk space, or you entered
an invalid drive name or invalid syntax on
the command line.
5 Disk write error occurred.
Rem Attempt file copy...
xcopy /D /V %1 %2
Rem Check result code and if it was successful (0), delete the source.
if errorlevel 0 (
echo Copy completed successfully
del /Q %1
Rem Not Errorlevel 0...
echo Copy failed for some reason.