I've been researching how to backup archive files for days now, and perhaps I am a tech idiot because I can't figure this out. Your help would be so appreciated. I have a MBP with just 250 GB of hard drive space so I need to move files to external hard drives to make space. These files will no longer be on my internal HDD. I just purchased two 2TB drives from OWC for backup. When I look at programs like Carbon Copy Cloner and SuperDuper, they seem to address copying files on an internal HDD and cloning it exactly to another HDD so that there are two identical copies of the drive, but how do people backup archive files on external hard drives? What I want to do is the following: 1. Copy all of my pictures, music, and movies on my internal HDD to the two external HDD's. Then I I want to delete most of these files so I have room my internal HDD. I want to keep some pictures and videos (like my mother-in-law who passed away) on the internal HDD so that I have 3 copies of those pictures (on the internal and two external HDD's). 2. As I download additional pictures and videos from my phone or camera, I would like to find a program that copies only the new pictures and videos to both external hard drives. I do not want to clone my internal HDD to the external HDD since there will be archived pictures on the external HDD that are not on the internal HDD. I also want actual copies of these pictures and videos that I can easily access from the hard drive. It seems that imaging or cloning a hard drive leads to a zip file of sorts that needs to be opened to restore the file. I'd rather have just actual copies that I can easily access. I keep seeing terms like clone, mirror, image, one-way synch, two-way synch, and it is all pretty confusing. I do not want a program that will synch my internal and external drives. There were some people using SuperDuper that lost archives files that were only on their external HD because SuperDuper deleted files on the external HD that were not on the source drive (internal HD). I've read through Bombich's website about Carbon Copy Cloner, but while CCC has the ability to not delete files on the destination drive, they say that it is possible that the software or operation error may result in deletion of those files, so they recommend having archived files on a separate hard drive. I would like to avoid having to manually transfer new files each time to both external hard drives. Given how small some of the HDs are in the MBP, I'm sure there are others out there facing a similar situation. If someone could recommend a backup strategy that would accomplish what I'm trying to do, that would be immensely appreciated. Thank you.