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The widespread adoption of AI inference workloads in 4Q25 significantly raised requirements for data storage systems, according to TrendForce’s latest findings on the enterprise SSD market. Meanwhile, enterprises accelerated upgrades to their general-purpose servers, while shortages in HDD supply pushed some demand toward SSD solutions. These factors together drove combined revenue for the world’s top five enterprise SSD vendors up 51.7% QoQ to more than US$9.9 billion.
Among leading vendors, Samsung retained its top position, reporting nearly $3.66 billion in revenue in 4Q25, up 49.7% QoQ. The company demonstrated the strength of its vertically integrated business model. As concerns grew over potential DRAM shortages, many customers turned to Samsung because it can rely on its own DRAM and NAND Flash production to ensure stable SSD supply.
Samsung has now fully rolled out its 176-layer QLC enterprise SSD lineup, which is expected to see significant shipment growth in 2026.
SK Group (including SK hynix and Solidigm) ranked second. Solidigm has long focused on high-capacity QLC SSDs, and demand for these products accelerated in 4Q25. As a result, the group’s total revenue rose more than 75% QoQ to $3.26 billion—the fastest growth among the top vendors—while its market share climbed to 30.2%.
SK Group has developed a clear product roadmap that differentiates its technology and strengthens its position in the enterprise SSD market. This will address the shift in generative AI workloads from training toward inference.
Micron ranked third, with revenue exceeding $1.4 billion in 4Q25, representing 41.4% QoQ growth. The company deliberately reduced the share of consumer SSD products in its portfolio and concentrated on the higher-margin enterprise SSD segment, allowing it to maintain strong revenue momentum.
Micron is developing SLC SSDs with high drive-writes-per-day (DWPD) ratings to support AI workloads, particularly key-value (KV) cache operations. These products are expected to become an important part of its strategy in the AI storage market.
Kioxia generated $1.16 billion in revenue in 4Q25, up 18.9% QoQ. Although its growth lagged behind some competitors, the company continues to invest in long-term opportunities related to AI storage. Its current strategy focuses on expanding its portfolio of high-speed and high-endurance SSD products to meet future demand from KV cache workloads and AI training.
SanDisk reported revenue of $440 million, rising 63.6% QoQ. While its revenue base remains smaller than its peers, the strong growth rate is noteworthy. The company is expected to significantly increase the share of QLC-based SSD shipments in 2026, which should drive a meaningful rise in the contribution from enterprise products.
TrendForce notes that PCIe 5.0 will become the mainstream interface in 2026, while the number of enterprise SSD bits shipped to the market will continue to rise. This means that overall enterprise SSD revenue could potentially double in the coming year.
Competition among suppliers will not be determined solely by NAND layer counts. Instead, leadership will increasingly depend on which companies can deliver stable PCIe 6.0 solutions first and develop SSD products optimized specifically for AI workloads.
