There is no set limitation on the amount of data storage you can have with Rocketspark. The most common way people use up storage is to upload extreme amounts of images, but that said, Rocketspark has no fixed limits on storage capacity but we do have a fair usage policy. Since we launched Rocketspark in 2009, we haven't ever applied restrictions - this is simply a safety cap if a Rocketspark website is used for unusual purposes.
Keep in mind too that excessive amounts of images you place onto your pages could affect the loading speed of that page for your visitors.
Please see our Terms and Conditions for details on data size/storage and fair usage traffic limits.