It is offering unlimited total storage capacity for those interested in the service, but is limiting individual file sizes to 30 MB. (thenextweb.com)
Using drives of different sizes usually results in total storage capacity that's only a multiple of the smallest drive. (pcworld.com)
For most modern PCs, that means getting your hands on a USB flash drive with at least 8 GB total storage capacity and then downloading an ISO file containing the latest installation image. (zdnet.com)