Apps and software that come with your Surface use a significant amount of the disk space on your Surface. Find out how much storage is available for your photos, music, videos, and other files on the different Surface models. Learn how to add more storage space.Apps and software that come with your Surface use a significant amount of the disk space on your Surface. Find out how much storage is available for your photos, music, videos, and other files on the different Surface models. Learn how to add more storage space.Microsoft Support – Surface Devices