Strong March Data Center Storage Shipments, SSD and HDD Both Up

Overview

This report is based on the latest data released by Techno Systems Research (TSR), tracking the shipment situation of Hard Disk Drives (HDD) and Solid State Drives (SSD) in the Japanese electronic components industry for March 2026. The core conclusion is that storage demand for data center (DC) applications remains strong. Although there are concerns in the market about helium shortages potentially triggered by the Middle East situation, actual production and shipment levels for enterprise SSDs and nearline HDDs have not been significantly impacted and instead remain at historical highs. The report maintains its view on continued growth in this sub-sector and believes that the increased proportion of large-capacity products will drive total capacity growth significantly higher than shipment volume growth.

Core views

Data center storage demand shows structural high growth. March data shows enterprise SSD shipment capacity reached 36.80 EB, growing significantly 133.9% YoY, and increasing 5.1% MoM; shipment volume reached 5.9 million units, growing 55.3% YoY. This trend validates the vigorous demand for high-performance storage driven by AI and cloud computing infrastructure. TSR forecasts total enterprise SSD shipment capacity for 2026 to reach 425.3 EB, up 62.0% YoY, showing extremely strong growth momentum. As a cornerstone for massive data storage, nearline HDD performance is equally robust. March data center nearline HDD production was 6.84 million units, up 17.3% YoY. Although it decreased slightly 3.0% MoM, this is more likely due to seasonal or short-term production adjustments, not changing the long-term upward trend. TSR forecasts 2026 nearline HDD shipment capacity to grow 27.2% to 1800.0 EB, with shipment volume growing 12.6% to 84.22 million units. The report emphasizes that with the continuous improvement of per-drive capacity, value growth in the HDD market will be driven by 'capacity' rather than simple 'quantity'. A clear differentiation appeared between consumer markets and data center markets. Unlike the heat of the enterprise market, non-enterprise SSD shipments used for PCs, external devices, and games declined YoY. This is attributed to NAND Flash price increases suppressing consumer electronics terminal demand elasticity. This indicates that the current recovery in the storage industry is not comprehensive across-the-board, but highly concentrated in specific high-temperature tracks like data centers. On the supply chain level, although geopolitical factors triggered potential concerns about helium supply, this has not yet caused substantial obstacles to actual output. The report points out that data center storage will continue to maintain a layered coexistence pattern of SSD, HDD, and tape drives in the future. Different media will complement each other between warm/cold data and hot data based on their performance and cost advantages, rather than simple substitution relationships.

Analysis framework

The report adopts an analysis method combining high-frequency monthly data tracking with third-party authoritative institution forecasts. First, using monthly production and shipment data (including unit count and EB capacity) released by TSR, real-time verification of industry prosperity is conducted, distinguishing dimensions of 'volume' and 'capacity' to capture value increments brought by product structure upgrades. Second, by splitting application scenarios (enterprise vs. consumer) and product types (SSD vs. HDD), the source of growth is precisely located, avoiding the masking effect of total volume data. Finally, combined with supply chain map analysis, the supply-demand matching of upstream components (such as heads, motors, substrates) and potential bottleneck risks are evaluated, making forward-looking judgments on industry trends for the next 12-18 months.

Methodology notes

• Industry/Industrial Analysis FrameworkVolume-Capacity Split

  Differentiated Analysis of Shipment Volume and Capacity

  In the storage industry, simply looking at 'how many were sold' (shipment volume) can often be misleading because individual product capacity is iterating rapidly. The report tracks both 'shipment volume' and 'shipment capacity (EB)' simultaneously. When capacity growth rate significantly exceeds quantity growth rate, it indicates the industry is undergoing a migration process towards high-end products, which is a key indicator for judging real value growth in the industry.

• Industry/Industrial Analysis FrameworkSupply Chain Mid-and-Upstream Transmission

  HDD/SSD Supply Chain Layered Mapping

  The report not only focuses on finished product manufacturers (such as Seagate, WDC) but also deeply tracks upstream core components (such as TDK's heads, Nidec's motors, HOYA's glass substrates). This whole-industry-chain perspective helps identify truly beneficial segments: when downstream complete machine shipments increase, upstream component manufacturers with high barriers often have stronger pricing power and earnings certainty.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• TDK (6762.T)

  Core HDD head supplier, directly benefiting from nearline HDD production growth and large-capacity trend

  Strengths

  Occupies important share in HDD head market, especially enterprise products; Diverse business layout

  Weaknesses

  Decline in consumer HDD demand puts pressure on some of its businesses

  Comparison

  Compared to pure HDD manufacturers, TDK business is more diversified with stronger anti-cycle ability; However, competes with internal self-made by Seagate/WDC in HDD component field

  Risks

  Risk of HDD technology route being replaced by SSD in the long term; Raw material price volatility

• Nidec (6594.T)

  Global leader in HDD spindle motors, nearline HDD shipment growth directly drives motor demand

  Strengths

  Very high market share in nearline HDD motor field; Strong precision manufacturing capability

  Weaknesses

  HDD motor business maturity is high, growth ceiling is visible

  Comparison

  Compared to Minebea Mitsumi, Nidec has more obvious advantages in enterprise and large-size HDD motor field

  Risks

  Long-term contraction of overall HDD market size; New business (EV motors, etc.) expansion under expectations

• Minebea Mitsumi (6479.T)

  HDD motor and mechanical component supplier, benefiting from HDD production rebound

  Strengths

  Cost advantage in small-size HDD motors and precision components field

  Weaknesses

  Lower market share in enterprise HDD than Nidec

  Comparison

  Forms differentiated competition with Nidec, focusing more on specific niche markets

  Risks

  Weak consumer electronics demand affects its non-HDD business; Exchange rate fluctuation risk

Key data

• March Enterprise SSD Shipment Capacity36.80 EBGrowth 133.9% YoY, Increase 5.1% MoM
• March Nearline HDD Production6.84 Million UnitsGrowth 17.3% YoY, Decline 3.0% MoM
• 2026E Enterprise SSD Shipment Capacity Forecast425.3 EBTSR Forecast Growth 62.0% YoY
• 2026E Nearline HDD Shipment Capacity Forecast1,800.0 EBTSR Forecast Growth 27.2% YoY
• March Total SSD Shipment Volume29.67 Million UnitsDecline 1.4% YoY, Dragged down by Consumer Sector

Impact & implications

For the storage industry chain, the current data confirms that the supercycle driven by AI is still accelerating. This means production capacity utilization rates for related enterprise SSD controller chips, NAND particles, and HDD critical component suppliers are expected to remain at high levels. Especially for companies with technology layouts in 'large capacity' products, they will obtain better profit elasticity compared to those relying solely on shipment volume. At the same time, weakness in the consumer market reminds investors to be alert to risks for storage manufacturers with single business structures and excessive reliance on PC/phone markets.

Risks

• Deterioration of Middle East situation leading to helium supply shortage, affecting nearline HDD production
• Continued rise in NAND Flash prices suppressing non-enterprise SSD demand
• Slowing data center capital expenditure leading to enterprise storage demand falling short of expectations
• Changes in AI technology development paths leading to storage architecture adjustments

What to watch

• Monthly TSR released HDD/SSD shipment and capacity data
• Middle East geopolitical situation and helium spot price trends
• Capital expenditure guidance in quarterly earnings reports of North American Cloud Service Providers (CSP)
• NAND Flash manufacturer capacity utilization rate and pricing strategy changes