Web Edition: Revisions have -hash and -vss appended

I’ve been making backups for a couple days now. I tried my first restore, as a test. It completed successfully, which makes me happy.

But I noticed that in the revisions list, a few have -vss and one has -hash appended, like this
revision 1 created at 2020-04-15 16:37 -hash
revision 6 created at 2020-04-15 20:12 -vss

Most have nothing appended. What do the appendages mean?

iirc the first revision always have -hash option by default. -vss means that the revision is created by Volume Shadow Service.

Thanks @sanvit. But after the first couple of test backups I added the -vss command option. So all of my subsequent backups, then, should show -vss in the revision list. But only a few, seemingly random, backups do. And I checked the backup logs. I couldn’t find one that looked like -vss was not in operation; i.e. there were no “the process cannot access the file because it is being used by another process” errors, despite many of the backups being made while files were open and being worked on. So, for me, the absence of -vss on all backups in the revision list remains a mystery.

Maybe you have added the -vss option on the schedule and not the backup operation, thus manually running the backup didn’t use vss? Or, it could be that some other backup is using the same backup ID.