1. no compression -offers the advantage of a faster backup process, but the disadvantage of more disk space requirements. Also if a file gets corrupted the integrity of the entire backup is not compromised. 
2. use Zip compression - use this if you want Titan Backup to generate a zip backup file so that you spare disk space. Titan Backup doesn't use proprietary archive formats like other backup programs do. It uses the standard Zip file format. This makes it very easy to restore data manually form the backup archive even if Titan Backup is not installed.

For this option you can choose the compression quality: move the slider from Low to high in order to set the compression rate. Low means worse compression rate but best speed and High means best compression rate but slow speed.

You can choose to create self-extracting archives that will allow you to unzip even if you don't have a compression tool. Self-extracting archives cannot be larger than 4 GB (Windows cannot work with .exe files that are larger than 4 GB). You can use incremental and differential options for a zipped backup, to any destinations (FTP, CD/DVD, etc.).

You can choose to split your archive in chunks of predefined size. This is useful if you plan to write the archives on several CDs.

Also, you can span a backup to multiple partitions, if you don't have enough space in one of these partitions, but the sum of the free spaces is enough to backup your compressed source in these partitions. For example, you can set as destination C:\First Folder;D:\Second Folder;E:\Third Folder (destinations must be separated by semicolon). You can use spanning only with compressed backup, you must be checked "Use Zip compression" in the Options tab, with Replace backup (incremental and differential backup must be unchecked).

1. no encryption - this option is set by default 
2. Zip password protected - with this option selected Titan Backup will backup your files in a password protected zip file. You have to fill in the password and retype it for confirmation. 
3. AES Encryption - Titan Backup offers also military strength 256-bit AES strong encryption to protect your privacy. With this option selected Titan Backup will backup your files in a Zip, and then it will encrypt the entire archive. You need to provide a password to protect the encrypted file. If you don't provide this when you create the backup task, you will be asked for a password when the backup is created and every time the backup task runs.
4. For security reasons, if you edit the task, the password is not visible, but you can change it, by clicking to "Change Password" button.

With this selection you have 2 additional options available:

• Version control - with this option only the changed files will be saved

• Differential backup - with this option you will delete the files from the backup and that don't exist anymore in the source of your backup.