Need SSR2013 Destination Files Explained

 I realize this is pretty simple, but I can't find it in the manual, or on the web. In simple English, what does all this mean?? (attached) Is there a tech sheet, or explaination somewhere on this?

 I realize the JEFFREY-PC_C_Drive002 is a base, and the JEFFREY-PC_C_Drive002_i006, etc are incrementals, but I have in my defination, sets to be saved as '1.' This is the second base & set in a new month; shouldn't it say Drive001 again?

Thank you.