Very good tutorial as usual!
I had cause to check it out recently for an error I was getting on a PC I built (not for profit) for someone. I was getting Event ID: 55 source :NTFS with a reference to VSS and drive errors, run chkdsk. Doing HDD checks inc manufacturers plus others, the HDD appeared fine. I came across people suggesting - Clear VSS; Disable: Enable to overcome the problem. It seemed to work. Clearing the VSS is critical and this tute helps. I recommend the vssadmin command line method you describe.