SOS Online Backup is best suited to provide you with cloud backup service for a single computer and a handful of mobile devices. The SOS Online Backup Personal Cloud 1 account offers limitless off-site data backup for one PC or Mac, with the ability to add an unlimited number of smartphones and tablets to the mix.

Available for Android and iOS, the SOS app is one of only two of the online backup comparison that can back up the entire contents of the mobile device on which it's installed. This goes beyond photos and videos to include text messages, apps, settings and contact lists. Unfortunately, these full mobile backup capabilities are only functional on Android devices. iOS devices are limited to backing up only photos and contacts. As with all other cloud backup services, the SOS mobile app can be used to access your cloud-stored files.

SOS Online Backup's administrative capabilities are versatile. These are accessed through the program's user-friendly interface, which gives you the ability to perform complex functions without making it difficult to do so. Backup can be scheduled to occur at specific times, or it can be set to run continuously. A continuous backup updates files as they're changed, ensuring that your online files are always up to date. If the continuous backup impacts the performance of your computer, you can also set the amount of bandwidth used for backup with the optional throttle control. Deleted files are available for recovery for an unlimited length of time, and the system saves an unlimited number of file versions, which allows you to revert to earlier incarnations of files. You can also back up data from an external hard drive connected to your computer.

Security features with SOS are strong, with the exception that you cannot perform a remote wipe of a computer in the event it's stolen. Aside from that, SOS Online Backup is highly rated. Storage is geo-redundant, which means that your files are stored multiple times to different physical locations. This provides added safety for your digital files. Military-grade encryption is used to upload your files across the internet and again when the data is at rest.

A thorough knowledgebase with video tutorials and FAQs makes finding resources easy. Live chat, email support and telephone support are also available.

SOS Online Backup Summary:
9/10

SOS Online Backup operates on a user-friendly interface that is both intuitive and highly versatile in functionality. Unlimited storage is available to only one computer, but the ability to include data from a connected external drive and the ability to back up an unlimited number of mobile devices helps balance that out.

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SOS Online Backup Personal Cloud 1

Pros
You get access to top-quality help and support, with options for phone, live chat and email.

Cons
The unlimited online backup can only be used for one computer per account.

The Verdict:
 9/10

SOS Online Backup combines excellent help resources with versatile administrative controls to deliver an easy-to-use, highly functional online data backup service.