Yesterday I was doing a restore on a server with a number of shadow copies when the version I needed was no longer available. It seemed to vanish. I think another time I was on a different server and the same thing happened, then later they came back. This time they did not come back. I can see there is plenty of space on the separate partition holding the shadow copies. I also think the space used indicates that somewhere in there are the missing shadow copies. I also wonder why when I look at the partition holding the shadow copies I can see space used, but I see no contents.