The backupHistory.json and Backup Journal files both log information regarding backup operations. The backupHistory.json can be found in the database folder while the Backup Journal can be found in the logs folder within the database folder.

The backupHistory.json file only logs information for recent (amount set in database settings) and succesful backups. The "status" for each backup in this file will be -1 as that stands for a successful backup.

On the other hand, the Backup Journal logs information for many more backup operations (up to 999 journal files). Unsuccessful or interrupted backup information are also recorded.

When reviewing backups, the Backup Journal is better for analyzing older or unsuccsessful backups. However, backupHistory.json provides information regarding the structure file/data file path and duration of the operation.