Hi
you can have a look here
then, shortly here for exchange:
Full Backup
- The DBs will be backed with log truncation .
- The truncated logs won’t be backed up .
- The logs above the checkpoint to the high log generation will be backed up by default anyway.
Full and Log Backup
- The DBs will be backed up with log truncation .
- The truncated logs will also be backed up which means all the logs (even the ones that will be truncated will be backed up )
As you can see Full Backup with “backup logs that will be truncated” is same as full + log backup.
Log Backup
- Backed up logs since the last log copied for that DB will be backed up.
Copy-only
This option to specify that the Server does not truncate transaction logs. You should use this option when you are also managing the Server with other backup applications