Carbonite, Inc. (NasdaqGM:CARB) is exploring a sale after receiving takeover interest, according to people familiar with the matter. Carbonite is working with a financial adviser, said the people, who asked to not be identified because the matter isn’t public. It has drawn interest from private equity, the people said. It is early in the process, no decision has been made and Carbonite could opt to remain independent, they said. A representative for Carbonite declined to comment.