An Open Access repository provides free content and makes that content discoverable through Google, Google Scholar, and other search engines. Some open repositories are associated with funding agencies: NIH has PubMed Central, NASA has PubSpace, and DOE has PAGES. Some disciplines use community repositories: physics has arXiv, biology has bioRxiv, and the humanities have Humanities Commons. Many institutions run repositories: Harvard has DASH, MIT has DSpace@MIT, and Duke uses the Duke Digital Repository. If a version of your peer-reviewed article appears in a repository similar to these, you are aligned with the JH policy and do not have to do anything further.