Aggressive pricing from Zoolz: As little as $2/mo — with a five-year agreement — for unlimited storage for consumers, and $25/mo for a terabyte for businesses. That's 0.25¢/GB/mo. Cheap!
Everything is encrypted before it leaves your machine. There are ". . . 3 levels of encryption; 256-AES machine level encryption, transferred via secure sockets layer, and stored on encrypted 256-AES Server Side encryption."
Everything is stored on Amazon servers and geographically dispersed. Yes, Amazon could go down for a while, but what's the chance of that happening at the same time you've had a disaster?
Block-level updates for large files — handy for databases and other large files. If you're backing up a large amount of data you can ship them a drive — more bandwidth than most WAN links.
Restores from cold storage — per Amazon Glacier spec — take 3-5 hours. Business users can opt for faster restore times.
Consumer vs business
Consumer is unlimited, but uses Amazon's slower-to-recover Glacier service. Business capacity is limited, but you can choose to have data available for fast restores.
You can also choose Hybrid+ storage, which copies every backed up file to a local drive. As long as you have that drive you can restore much faster than from a WAN link.
The Storage Bits take
The consumer option is a very good deal: Half the price of disk-based "all you can eat" options from Crashplan and Backblaze. But they offer faster restores.
The business option is also excellent: Unlimited servers and users with more options for tuning the storage.
I'd plan on using the Hybrid+ option: restores from local storage will always be preferable. But if disaster strikes, Zoolz is your insurance policy.
Comments welcome, as always. Have you tried Zoolz? Please tell us about your experience.