Mobile service Zenprise has raised $30 million to help businesses better manage their mobile devices when it comes to security and functionality, the company announced today.

Zenprise is capitalizing on the substantial increase of smartphone use in the workplace. The company offers its Zenprise MobileManager service for on-premise deployments and Zencloud for cloud deployments.

The funding round was led by Greylock Partners, with participation from all of Zenprise’s existing investors including Rembrandt Venture Partners, Ignition Partners and Shasta Ventures. Greylock has made some major moves in the past few weeks with a $30 million investment in and leading the round on Tumblr’s massive $85 million VC investment.

“This year has been one of tremendous growth for Zenprise, driven by companies seeking to balance Bring-Your-Own-Device policies with mobile device, application and data security,” said Jayaram Bhat, CEO of Redwood City, Calif.-based Zenprise, in a statement. “This significant investment led by Greylock is a major validation of Zenprise’s strategy and market position.”

Previously, Zenprise raised $9 million in funding in June 2010 and a $10 million round in March 2009. With today’s funding and some prior investments, Zenprise’s total funding is now at about $64 million.