First, cloud storage startup Backblaze pioneered the concept of open source storage hardware. Then, it showed how to pack 135 terabytes into a 4U case (which Backblaze calls a "pod") for less than $8,000. As it turns out, a lot of people really like what the company is doing: Backblaze rolled out the specifications of its third-generation storage pods on Wednesday against the backdrop of hundreds of companies building and actually selling the designs.





