This introduces complexity by having part of the storage in the cloud, and no longer available locally.Use a cloud storage provider such as Google to store the bulk of the library in the cloud, while using MergerFS to expose a single directory to the media server?.My general understanding is MergerFS will dynamically allocate files to whatever available storage there is. I don’t have a lot of experience with MergerFS beyond the conceptual level, and will appreciate comments.Expand the storage by adding additional expansion units/additional NAS, and tie it together with MergerFS, so that only a single directory is exposed to the media server?.An issue here is eventually a bigger NAS will run out of space as well, thus circling back to the original issue.Build a bigger NAS with more storage capacity?.Generally connectivity between the pools won’t be an issue, whether over an eSATA expansion unit or an additional NAS over the network. An issue I see here is efficient usage of available storage, as certain sub-libraries will fill up faster than others.Expand the storage by adding additional expansion units/additional NAS?.

My initial target is probably to double the available storage. It is all stored within on main directory (“Libraries”). This Plex library is further split up among sub-libraries per genre. For consideration is how to do this while maximizing storage space between split libraries. I’m currently thinking about expansion for the future. I rapidly filled up about 70 TB of storage, out of 108 TB usable space, on my Plex NAS (which lives on a Synology DS1821+ filled with 18 TB drives) within a year between ongoing weekend hobby BD rips of my physical library and various media hoarding. I’d also appreciate any insights on types of setups that may be adjacent to this idea. I’d like to gather some insights from those with experience managing large media libraries that are exposed by a unified media server, specifically pertaining to Plex/Emby.

Plex on cloud