When Acronis Agent for Windows is installed, a folder Itzam is created on the following location:
Windows XP/2003: C:\Documents and Settings\All Users\Application Data\Acronis\Temp\
Windows Vista/7/2008: C:\ProgramData\Acronis\Temp\
The purpose of this folder is to store a temporary database which contains information about files/folders tree during file-level operations. This database is stored in .dat~ format and ensures quick and proper access to the respective data.