NovaBackup (also stylized as NovaBACKUP) is an annual software subscription service developed by NovaStor that enables data backup and recovery across physical and virtual computers on Microsoft Windows operating systems.
[1] NovaBACKUP uses the proprietary NBD file extension and is backwards compatible, meaning backups from older versions of NovaBACKUP (after version 8) can be restored with the latest version of the software.
For version 7 and 8, the backups can still be restored, but the file extensions need to be updated to .NBD to do so.
Versions built for SMB users support backups for PCs, laptops and servers, including support for Exchange/SQL and virtual machines.
[3] NovaBackup is targeted toward small and medium-sized businesses and can create file backups as well as image backups.