The highest tier service, the $149-per-year Carbonite Prime, offers all that plus the ability to have your files physically couriered to your location if you have a problem downloading them. For $99-per-year, Carbonite Plus provides everything on the basic plan, plus the ability to connect to external hard drives, so you can sync the data that’s too big to fit on your PC or Mac. The $59-per-year basic Carbonite plan provides automatic backups, remote access, and free support, should you ever have a problem retrieving your files. One of the first (and therefore more popular) cloud backup programs, Carbonite offers three tiers of data-syncing options, all of which come with unlimited storage space. Backblaze costs $5 per month, with discounted rates for users who pay in advance for a year or two of service.= Encrypting your files and requiring two-factor authentication, the service does its best to keep both Mac and Windows-based customers secure. And if downloading your files is cumbersome (or just plain impossible, for whatever reason), your data can be shipped to you on a flash drive or USB hard drive. Offering storage for an unlimited amount of files, no matter their size, and at whatever speed you want to up- or download them, this easy-to-use backup service is great for setting it and forgetting it.

If you don’t know the answer, Backblaze might be the perfect solution. Or, if that’s impossible to answer, guess how much storage you need. Without looking at your computer, ask yourself how many files you want to back up.

Best online backup for mac and pc