The Open Storage Network (OSN) is an NSF-funded cloud storage resource, geographically distributed among storage pods. OSN is a collaboration between MGHPCC, SDSC, NCSA, Rice, JHU, and RENCI, with a federation of pod-owning sites and contributions from other advanced computing centers. Each OSN pod currently hosts 1.5 PB or more of storage, and is connected to R&E networks between 40 and 100Gbit. OSN storage is allocated in buckets and is accessible using S3 interfaces, including with tools such as Rclone, Cyberduck, and the AWS CLI, or via REST API interfaces.