If there's online backup that could be called "full-service" it's venerable IDrive. Not only does IDrive provide traditional backup, real-time backup, file sharing, and syncing files across multiple PCs and devices (Windows, Mac, iOS, and Android), it's one of the few services that still offers a free 5GB account. With Mozy and others disappearing or going pay-only, that's significant — 5GB is enough to protect your most essential data (documents, tax data, etc.)
The latest hook IDrive uses in pitching its service is "NSA-proof" backup. With the NSA involved in so many open-source projects, that's a bold claim. IDrive uses OpenSSL AES and a proprietary key generation technique according to the company. All the best sources indicate that the NSA was not involved in this portion of OpenSSL, so it should be okay.
IDrive backup runs as a standalone application, but when you enable the Sync feature, you get a folder under your user name as you do with Skydrive, Dropbox, and others. Drag any files you want available across devices there and the rest is automatic. I installed the IDrive client for my iPad and it backed up my photos (camera roll) and videos without issues. It also backs up the Apple calendar and contacts, but I use other services for those. Once backed up, your mobile data is available online as well as on your other devices for restoring.
A most interesting IDrive feature is its CDP, or constant data protection. When you switch this on (for files sized 500MB or less), files are saved as soon as changes are detected. It's perfect for keeping ever changing-data safe — the minute you save your file, it will be backed up online. Alas, you're not allowed to define a subset of data to watch, so it's all or nothing. It might streamline performance a bit if the program were only comparing to a short list. There's, of course, also hourly and daily scheduling.
IT types might be more interested in IDrive's server backup features which include backup of Oracle, SQL Server, SharePoint, and Exchange data. There's even a brick level Exchange backup that allows you to restore mailboxes without interrupting the service. Also provided is a system-state backup which includes the registry, as well as Active Directory and certificates if the system serves either.
For the most part, the Windows client software that I tested worked well, though it had a tendency to grind when I selected or deselected large amounts of data. Indeed, I could hear one of my hard drives being surveyed when this happened, despite the fact that the data I selected was on an SSD. I waited as long as 90 seconds for the program to become responsive after selecting a large repository of files. Perhaps threading the procedure? My CPU has four physical cores and four virtual ones. Please use them.
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