Agree with the earlier comments about external HDD and cloud storage. In case you do not know about cloud storage, they can optionally upload the document in your hard drive to the cloud storage automatically, which means, you save your files in local hard drive C:\My Documents for example, any file you put in this folder gets uploaded automatically to cloud storage. This is an optional feature, if you want this feature, you need to install their custom software.. if not, you just manually copy the file to cloud storage.