With Linux and ZFS, QuTS hero supports advanced data reduction technologies for further driving down costs and increasing reliablility of SSD (all-flash) storage.

Everything being subscription based these days, its a little price to pay for peace of mind where storage is concerned. I see it is 6 a month for unlimited storage. Powered by quad-core 1.7 GHz processor, the TS-431K provides 4 drive bays. Or would QNAP give me the option to backup to BackBlaze, although with a personal cloud backup account. QuTS hero is the operating system for high-end and enterprise QNAP NAS models. High-performance quad-core NAS for reliable home and personal cloud storage. WIth Linux and ext4, QTS enables reliable storage for everyone with versatile value-added features and apps, such as snapshots, Plex media servers, and easy access of your personal cloud. QTS is the operating system for entry- and mid-level QNAP NAS. If the drive mounts to your computer like a USB hard drive, then yes, Backblaze should back it up.

Backblaze personal qnap