Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
Inline Buffer for 2x Blue Belts with 16 Steel Chests for a total of 76K of storage.
Priority Splitters ensure that Inserters are not working needlessly and Material is only stored when the output is backed up.
Chests are also connected to Substation with red wire to get a capacity readout.