Dropbox has completed a $250 million Series B financing. The financing was led by Index Ventures, and includes participation from new investors Benchmark Capital, Goldman Sachs, Greylock Partners, Institutional Venture Partners, RIT Capital Partners, and Valiant Capital Partners. Early investors Sequoia Capital, Accel Partners, and Hadi and Ali Partovi also participated. Dropbox has received a total of $257.2 million in funding.

The company will use the funds to make acquisitions, pursue strategic partnerships, and grow the team. Dropbox has more than 45 million users saving one billion files every three days, and is on track to triple its user base in 2011.

Drew Houston (Co-Founder and CEO, Dropbox): Our goal has always been to build a service that hundreds of millions of people would love and trust.