We currently accept up to 50GB per record with a maximum of 100 files. We grant a one-time quota increase of up to 200GB. We have no size limitations in the number of records or number of communities you can upload, but we expect you to apply fair usage of Zenodo so that we can keep the service free for the long-tail of science. If in doubt please get in touch with us to get an upfront agreement if we consider your use case fair usage.