I am trying to backup an external drive that has about 400Gb of data. NSR2 has been running steadily all day yesterday, all last night, & all day today. It has created the following files: Computer Name.sv2i; Computer Name_Drive Letter_Drive001.v2i; Computer Name_Drive Letter_Drive002.v2i and is presently working on creating Computer Name_Drive Letter_Drive003.v2i with 11 hours to go!! I don't understand what is happening. I don't know what all those different files are & I don't know how long this backup is going to run. I would really appreciate some help.