Market evolution: Hard disk drives (CN 84717030) — 2015–2025

Introduction

Hard disk drives (HDDs), classified under customs code 84717030 as "Disk storage units," are a mature technology within the broader category of automatic data-processing machine components. Over the decade spanning 2015 to 2025, the European Union's trade in this product category has undergone a dramatic structural transformation. What was once a market characterised by substantial EU export capacity — with a trade surplus of €777 million in 2015 — had, by 2025, shifted to a modest deficit of €26.6 million. This report examines the principal dynamics behind this shift: the collapse of EU export capacity, the increasing concentration of import supply on China, and the broader structural transformation of EU production and trade vulnerability.

1. The Collapse of EU Exports and the Disappearance of Ireland's Manufacturing Base

The most striking feature of EU trade in disk storage units over the 2015–2025 period is the near-total evaporation of EU exports. In 2015, the EU exported disk storage units worth approximately €1.08 billion; by 2025, that figure had fallen to just €29.5 million — a decline of 97.3%. This collapse was driven overwhelmingly by a single member state: Ireland.

Ireland's Dominance and Sudden Decline

In 2015, Ireland alone accounted for exports of €1.01 billion — representing over 93% of all EU extra-EU exports in this product category. This concentration reflected the presence of major hard disk drive manufacturing operations in Ireland, notably by companies such as Seagate, which operated large production facilities there. By 2025, Ireland's exports had fallen to just €4.2 million, a decline of 99.6%. The corresponding collapse in export specialisation — from the EU's leading exporter to one of its least specialised producers — confirms that this was not merely a trade diversion but a fundamental withdrawal of manufacturing capacity from the country.

Export Declines Were Universal Across All Major Destinations

No major export destination was spared. The table below summarises the value trajectory of the EU's top seven export partners:

The uniformity of these declines — all exceeding 98% — confirms that this was a sector-wide withdrawal rather than a loss of individual market share. Only Czechia managed to sustain a relatively stable export position, declining by just 5.5% in value terms over the decade, and it remains the EU's most specialised disk storage producer with an RCA of 3.01 in 2025.

The Shift from Net Exporter to Net Importer

The collapse of exports converted the EU from a major net exporter to a net importer. The trade balance swung from a surplus of €777 million in 2015 to a deficit of €26.6 million in 2025, with the deficit having reached as high as €28.1 million in recent years. This reversal reflects the fact that while imports also declined, they did so far less dramatically (–81.6%) than exports (–97.3%), resulting in a structural shift in the EU's position within global HDD trade.

2. Import Dependency and the Growing Concentration of Supply on China

While the EU's import trade in disk storage units has also contracted significantly — from €305.2 million in 2015 to €56.2 million in 2025, a decline of 81.6% — the composition of that import trade has shifted markedly. The result is a market that is both smaller and more concentrated.

China's Rising Dominance Among Suppliers

In 2015, China was already the EU's largest supplier of disk storage units, accounting for €136.8 million in imports. However, the other major suppliers have declined far more steeply, leaving China as the overwhelmingly dominant source by 2025:

China's share of EU imports rose from roughly 45% in 2015 to approximately 80% in 2025. The Philippines, which had been a major supplier reflecting manufacturing operations by companies such as Western Digital and Toshiba, saw its exports to the EU collapse by 98.4%. Malaysia, another important Southeast Asian production hub, similarly declined by 97.4%. Taiwan is the only other partner to have maintained a meaningful (though reduced) presence, declining by only 47.3%.

Sharply Rising Supply Concentration

This geographic consolidation is reflected in the Herfindahl-Hirschman Index (HHI) for imports, which more than doubled from 2,590 in 2015 to 6,511 in 2025 — an increase of 151.4%. An HHI above 2,500 is generally considered to indicate a highly concentrated market; the level of 6,511 reached in 2025 signals extreme concentration, essentially approaching a monopoly supply structure.

This growing concentration is mirrored by a rise in net import reliance, which increased from 61.1% in 2015 to 72.6% in 2025, peaking at 89.5% in an intermediate year. This means that the EU is now more reliant on external supply for disk storage units than it was a decade ago, while simultaneously depending on fewer, more concentrated sources for that supply.

Unit-Price Dynamics Reflect Changing Product Mix

A notable feature of the import data is the divergence between volume and value trends. While import quantities (by mass) fell by 89.6% — from 10,181 tonnes to 1,061 tonnes — the average unit price per tonne actually rose by 76.5%, from €29,970 to €52,903. This suggests a shift in the product mix: as total volumes contract, remaining imports may be skewed toward higher-value or more specialised units (such as enterprise-grade drives or SSD-class products still classified under this code). On the export side, the opposite occurred: export unit prices fell by 26.5%, from €236,647/t to €174,030/t, potentially reflecting the declining scale of EU production and a less specialised residual output.

3. Structural Decline in EU Production and Rising Trade Vulnerability

Beyond the trade flows themselves, the data reveals a deeper structural transformation: the EU's domestic production of disk storage units has contracted substantially, and the sector's trade profile now exhibits characteristics of significant external vulnerability.

EU Production Has Fallen Sharply

The EU's production of disk storage units declined from 13.96 million pieces in 2015 to 8 million in 2025, a drop of 42.7% by quantity. The decline in production value was even steeper: from €4.26 billion to €1.8 billion, a fall of 57.8%. This decline is consistent with the global consolidation of the HDD industry — from over 200 manufacturers in the 1980s to just three major players today (Seagate, Western Digital, and Toshiba) — and the progressive relocation of production toward Asia.

Specialisation Is Now Concentrated in Two Member States

The specialisation analysis for 2025 shows that meaningful production specialisation in disk storage units exists almost exclusively in Czechia (RCA of 3.01, RSCA of 0.50) and the Netherlands (RCA of 2.79, RSCA of 0.47). These two countries together account for 54.9% of EU production share in this product, whereas most other member states show near-zero specialisation. This represents a significant consolidation from 2015, when Ireland was the overwhelmingly dominant producer.

Trade Vulnerability Indicators Have Worsened

Several indicators point to increased vulnerability:

• Net import reliance rose from 61.1% to 72.6%.
• Trade intensity (the ratio of trade to domestic production) increased from 94.0% to 116.6%, indicating that the EU now trades more than it produces domestically.
• Export propensity (exports as a share of production) surged from 79.8% to 192.6%, though this paradoxical figure (exports exceeding 100% of production) likely reflects re-export and intra-EU processing flows rather than pure domestic output, and has become more extreme as the production base has shrunk relative to residual export activities.

Price Shocks Highlight Supply Chain Fragility

The volatility analysis identifies several supply chain disruptions over the period. The most notable is a price shock in imports from the Philippines in 2017, where import prices surged by 175.7% with an abnormality score of 21.8 — likely linked to the global hard drive shortage caused by flooding in Thailand and subsequent supply chain adjustments in Southeast Asia. A further export price shock to the United States in 2022 (abnormality 12.5, +75.6%) may reflect post-pandemic supply chain disruptions and inflationary pressures. The Philippines also showed the highest overall volatility among import partners, with a coefficient of variation of 2.27, underscoring the instability of supply from that source — even before its effective disappearance from the EU's import mix.

Conclusion

The EU's trade in disk storage units (CN 84717030) between 2015 and 2025 tells the story of a mature hardware technology in structural decline within Europe. The collapse of Ireland's manufacturing base — which once generated over €1 billion in annual exports — transformed the EU from a major net exporter to a net importer. Imports, while also declining in absolute terms, became dramatically more concentrated on China, whose share rose to roughly 80% of EU imports while the import HHI more than doubled to 6,511. EU production fell by over 40% in quantity and nearly 58% in value, with meaningful specialisation now limited to Czechia and the Netherlands. Net import reliance climbed to 72.6%, and supply chain volatility — as evidenced by past price shocks — highlights the fragility of this dependence. For EU policymakers, this dataset illustrates the broader challenge of maintaining strategic capacity in a sector that has undergone global consolidation, where the remaining production is increasingly concentrated geographically both within and outside the Union.