How to get additional 2GB of permanent extra Google Drive storage
As part of the Safer Internet Day Google is giving way a 2GB permanent storage on February 17 2015 once you completed this simple Security check in celebration of the Safer Internet Day. simply follow the instruction here.
After you’ve gone through the checkup successfully, you’ll see three green checkboxes (see below) that confirm you’re eligible for the free storage and, more importantly, that you’ve taken steps to enhance your online safety. We’ll be granting the storage automatically to everyone around 28 February 2015 and we’ll send you an email when your adjustment is complete.
SOURCE : GOOGLE