Google Drive offers 5GB of storage for free and 25GB for $2.49/month, 100GB for $4.99/month or even 1TB for $49.99/month. When you upgrade to a paid account, your Gmail account storage will also expand to 25GB.
Google Drive features:
Works on Mac or PC and can download the Drive app to your Android phone or tablet.
Search by keyword and filter by file type, owner.
Drive can even recognize text in scanned documents using Optical Character Recognition (OCR) technology.
attach photos from Drive to posts in Google+