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Cloud infrastructure startup Nebula claims its cloud hardware can undercut Amazon Web Services by 90 percent.

The Mountain View, Calif.-based company deploys complete private clouds for enterprises based on OpenStack (open source cloud computing software) and commodity hardware. The resulting implementations cost as little as $100,000, which is cheap for an enterprise-capable data center.

Before founding Nebula in March 2011, Chris Kemp cofounded OpenStack and served as NASA’s head of IT. Now he’s focused on bringing powerful private cloud tech to the masses.

“We’re democratizing what Google and Facebook have done with their data centers,” Kemp told VentureBeat in late 2012, when the company raised $25 million from Comcast Ventures and other investors. “You can use your favorite server vendor and plug those servers into our boxes. You plug in, and 15 minutes later, you have Amazon running on-premises.”

Now the company has taken on an additional $3.5 million in debt funding, according to a Form D filed with the Securities and Exchange Commission yesterday. We aren’t sure who ponied up the funds, but we’d put our money on Silicon Valley Bank, which provides Nebula with debt and credit facilities.

A rendering of Nebula hardware.

Above: A rendering of Nebula hardware.

Image Credit: Nebula

We reached out to Nebula to learn more about the new funding and the company’s current activities, but the startup didn’t respond by the time of publication.

Nebula launched its Nebula One cloud system in April 2013. Cloud critics have lambasted OpenStack for being difficult to deploy, but Kemp promises that Nebula One makes it simple. It features a single controller that enables server, storage, and networking provisioning for virtual machines.

The company has racked up customers like Xerox PARC, the Translational Genomics Institute, various government laboratories, financial-services companies, and a large biotech company, Kemp told VentureBeat late last year.

Nebula is a top contributor to OpenStack alongside RackSpace and HP.

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