Radio telescopes sample the phase and amplitude of EM waves in time. The raw data will then be down-sampled in size by about 2-3 orders of magnitude. Even after the down-sampling, it is becoming common- place to accumulate ~PB data. The increasing computational capability and the never-ending major discoveries, such as the fast radio burst (FRB), have both made feasible and necessitate an era of big-data astronomy. Currently under commissioning, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) is a Chinese mega-science facility, currently under commissioning. We have designed an unprecedented survey mode, namely, the Commensal Radio Astronomy FAST Survey (CRAFTS), aspiring to fully utilized the world-leading sensitivity provided by FAST and to discover ~1000 new pulsars, hundreds of thousands of galaxies, to obtain a >10 trillion voxel image of atomic hydrogen, and to explore the unknown unknowns in the universe. The data rate from CRAFTS is expected to be 10-30 PB per year. Such a survey is just one of many current efforts in radio astronomy. The era of EB astronomy is dawning on us.