The Combined Nomenclature (CN), v1:2021
8471 70 70: Disk storage units for automatic data-processing machines, neither optical nor magneto-optical (excl. hard disk storage drives and central storage units)
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=6b82e360-3b3b-4ca9-8ead-47dd359f111d