Pretty much. But Windows snapshots aren't writeable after you take them, which is a major downer and a major necessary feature. (Having this feature lets people do things like "Take snapshot and delete everything except *.lic files, under C:\Users, on every backup" and you can just issue deletes to the shadow volume after it is consistently created, and intercept the new deletions, like normal. Tracking deletions like this lets you more easily know what you should/should not back up -- only back up the allocated blocks in the shadow copy.)

So, there was a thing that added this feature to the Windows kernel in the product to make this work. Aside from the Linux stuff, which was totally separate. But if you don't need the writing capability, Shadow Copies are good enough, sure..

(Source: I used to work with the guy who made the above post)