I forgot to mention that the backup files are quite large, the default compression rate is only about 50%. So if your source is 8 GB then the backup file will be around 4 GB.
Browse around Acronis website to get some idea about differential and incremental backups. One possible schedule is to perform one full backup, let's say on the weekend, and then just do incremental backups every day during the week. That's why on my screenshot the secure partition takes 17 GB. The idea is to have two cycles of [full + incremental backups], in case you need to restore the state from a few days back, if, let's say, you suspect that you got a virus 4 days ago and the last three backups are infected.
