Location: Options > Advanced > Backup reserve copy
Backup reserve copy is an independent full backup version created immediately after a normal backup. Even when you create an incremental or differential backup version containing only data changes, the reserve copy will contain all the data selected for the normal backup. You can save reserve copies of your backups on the file system, a network drive, or a USB flash drive.
Please, be aware that CD/DVDs are not supported as locations for reserve copies.
To make a reserve copy:
All other backup options will be inherited from the source backup.