Seagate has introduced the Exos M series, a range of enterprise-grade mechanical hard drives available in 30TB and 32TB capacities. The two models, the 30TB CMR ST30000NM004K and the 32TB SMR ST32000NM003K, each offer a minimum of 3TB per disk and use a standard 3.
And oftentimes some or all of the metadata that helps the filesystem find the files on the drive is stored in memory (zfs is famous for its automatic memory caching) so seek times are further irrelevant in the context of media playback