The Acronis Secure Zone® is a special partition for storing backups on the same computer that created the backup. The current Acronis True Image Home 2011 creates the zone as an NTFS partition.
When you click Acronis Secure Zone on the Tools & Utilities screen, the program searches for the zone on all local drives. If the zone is found, the wizard will offer to manage it (resize, change the password) or delete it. If there is no zone, you will be prompted to create it.
The Acronis Secure Zone is not available as a location for backups in the recovery environment when you start Acronis True Image Home 2011 from bootable rescue media, through Acronis Startup Recovery Manager or BartPE.