Zetta, a company that provides cloud storage to businesses, has raised $11.5 million in a second round of funding, according to a filing with the SEC. Existing investors Foundation Capital and Sigma Partners contributed to the round.

Founded in 2007, Zetta provides instant data recovery to enterprises in the healthcare, technology, energy and education sectors. The company is based in Sunnyvale, Calif., and has raised $22.5 million to date.