Dear all, what is the difference between Snapshot and Backup in the context of Trove (o Reddwarf) database backups that I see https://wiki.openstack.org/wiki/Trove/snapshot-design (here)?

Is it maybe the following:

• backup = copy of volume in which data are stored;
• snapshot = copy of volume plus virtual machine used to host the engine?

Are they the same concept?

Thanks!