Configuring File Replication destination options
There are  specific destination settings that can be configured for 
 File Replication Method  jobs.
  
 Learn more about backup methods
To access these destination settings:
 Replication mode options * 
    Choose how you want to replicate  data on your portable  backup device (REV, external hdd, rdx drive). If you choose to keep a backup history you can also determine how to manage  disk space on your backup drives as well as define how many backup sets should be kept on each drive. These settings are used to  ensure that there is enough room on your backup device to   store new backup sets. For example, if you  have limited storage capacity on a drive,  you would need to continuously clear your device manually of backup sets to   accommodate new ones. It is much easier to let  BackupAssist manage disk space and there are a number of different options available.