Missing differential backup may cause loss of data. In case of database fault , we won’t be able to restore the database.
A Differential backup contains all the data in a specific database or set of file groups or files since last Full backup.
A Differential backup cannot be executed without Full backup but it is smaller and faster to create than the base of a full backup and it also requires less disk space to store backup images
Differential SQL backup should execute successfully every 24 hours.
What went wrong?
- Large backup file cause long backup execute.
- No available disk space.
- Network is not available.
What to do:
- Check backup system.
- Check server network connection