I receive an error from my file server :-
VssAdmin: Unable to create a shadow copy: The shadow copy provider timed out while holding writes to the volume being shadow copied. This is probably due to excessive activity on the volume by an application or a system service. Try again later when activity on the volume is reduced.
Command-line: 'C:\Windows\system32\vssadmin.exe Create Shadow /AutoRetry=15 /For=\\?\Volume{dbc86063-2237-11e2-b999-806e6f6e6963}\'.