In incremental backup, the first run always backs up all selected files and folders, and a backup catalog (.gbp file) is stored on the destination media. On subsequent runs, Genie Mail Backup searches for the catalog ".gbp file" in the destination. If the media is empty or it does not contain the catalog file, GMB will start with a new full backup. If the catalog file is found, GMB will create a new backup version, containing only files that have been added or modified since the previous run. A new version of the catalog file will be appended to the media, and files that were deleted, renamed or moved from the source machine will not be deleted from the backup archive, but they will not be included in the last version of the catalog.
To set GMB to use incremental backup, select Increment, from the Settings screen in the backup wizard.
Incremental backup, by default, uses the files' "modified date and time" attribute to determine which files have been modified since the previous backup run.
Enabling rollback during increment backup will cause GMB to keep old versions of modified files backed up in previous runs; this way the user can still restore (rollback to) any backed up older version of a certain file to protect against losing data by mistake.
With rollback enabled, each backup run will create a new file on the destination media - or a new folder if compression was disabled - containing new and changed files, and a new catalog ".gbp file" will be added to the root backup folder, with a trailing number appended to the filename; this number will be incremented by one for each new version, starting with zero (0) on the second run.
Backup Job.gbp ... First run.
Backup Job.0.gbp ... Second version.
Backup Job.1.gbp ... Third version.
Backup Job.2.gbp ... Fourth version.
Disabling rollback means that GMB will append new files to the original backup file/folder, while modified files will overwrite older versions.
When backup using compression is selected, if the data after compression exceeds 2GB in size, rollback will be forced.
The catalog will only contain one entry during incremental backup with rollback disabled. Each new version catalog will replace the previous one.
Disabling rollback is not supported when FTP backup is selected.
Backup without rollback is not supported backing up to Online
Backup without rollback is not supported when media is not re-writable, or if the user does not have delete permission on the destination.
To backup to CD/DVD with rollback disabled, media needs to be re-writable and packet writing enabled.
Backup without rollback is not supported when spanning to more than one location