Overview
Backup applications typically use network storage for storing backup archives, but this can be problematic when such resources are not available. Acronis designed a solution to this problem by carving off part of the local disk as a proprietary partition, which they refer to as Acronis Secure Zone (ASZ). Since this partition is accessibly only by True Image and Backup & Recovery, it functions as a backup target safe from malware, user files, or other uses or corruption. ATI can only manage a single ASZ per computer but can restore data off other ASZs present too (e.g. when a portable hard drive is connected).
Read more about this topic: Acronis Secure Zone