in case someone uses this service, well there's been an updateBackblaze Increases Upload and Restore Speeds, Adds File Sharing and More
Backblaze is launching the fifth iteration of its backup service today. One of the most significant improvements is faster backups: users may now manually set up to 20 backup threads, and the company says that those with faster connections could see speeds of up to 100 Mbps. Other changes include faster (up to 10x) restore preparation and immediate downloads of smaller files.
A lot of the features in this release have come from listening to our customers about how they want to use their data. "Rapid Access" quickly became the theme because, well, we’re all acquiring more and more data and want to access it in a myriad of ways. This release brings a lot of new functionality to Backblaze Computer Backup: faster backups, accelerated file browsing, image preview, individual file download (without creating a "restore"), and file sharing. To top it all off, we’ve refreshed the user interface on our client app. We hope you like it!
i don't use this service but according to their page, their business backup package supports NAS.
so if you want to backup 10tb, that woulld be 5x10 = 50 usd monthly compared to crashplans flat $5 usd monthly subscription fee for unlimited storage(storage is only limitation based on amount of your ram per TB installed on the Qnap NAS).Server / NAS Backup via B2
$5/Month/Terabyte