Just installed TI7 & ready to do 1st image. User Guide p 13 parag. 8 completely confuses me. Acronis told me to place SZ on C. Why would I want to install SZ on the same primary drive as all my data etc when p 13 says dont keep image on same disk - - - burn images on removable media.? My Ext. HD E (destination) only is used for backup storage. Why would I need a SZ on E ? Does using SZ make restoring easier or better quarantee I'll recover from a disaster ? Again p13 parag. 8 "local sec. backup for restoring damaged files" - - - can I do this without having to backup this local sec. backup ? Thanks very much for your consideration, time & help.