Kioxia has unveiled its latest innovation in enterprise storage: the LC9 Series SSD, boasting an unprecedented capacity of 122.88 terabytes (TB). This development marks a significant milestone in data storage technology, particularly for applications in artificial intelligence (AI) and data centers.

Unveiling the LC9 Series SSD

In March 2025, Kioxia announced the development of its LC9 Series SSD, a 2.5-inch form factor drive featuring a massive 122.88 TB capacity. This SSD is the first to utilize Kioxia's BiCS FLASH™ generation 8 3D flash memory technology, incorporating 2 terabit (Tb) quad-level cell (QLC) dies. The drive is designed to meet the escalating demands of AI systems, which require substantial storage solutions for tasks such as training large language models (LLMs), managing vast datasets, and facilitating rapid data retrieval for inference and fine-tuning processes.

Technical Specifications and Features

The LC9 Series SSD is engineered with several key features to enhance performance and reliability:

  • Form Factor and Capacity: The SSD comes in a 2.5-inch form factor with a storage capacity of 122.88 TB.

  • Interface and Compliance: It supports the NVMe™ 2.0 and NVMe-MI™ standards and is compliant with the PCIe® 5.0 specification, offering up to 128 gigatransfers per second in Gen5 single x4 or dual x2 configurations.

  • Endurance: The drive is rated at 0.3 drive writes per day (DWPD), indicating its suitability for read-intensive applications.

  • Advanced Flash Memory: Utilizing Kioxia's 2 Tb QLC BiCS FLASH™ generation 8 3D flash memory with CMOS directly Bonded to Array (CBA) technology, the SSD achieves high capacity, performance, and power efficiency.

Addressing AI and Data Center Needs

As AI adoption accelerates and larger LLMs and vector databases become more prevalent, the need for high-capacity SSD storage is surging. Advanced storage solutions such as Kioxia's LC9 Series 122.88 TB SSD will be critical in supporting the growing computational needs of AI models, enabling greater efficiency and innovation.

The LC9 Series SSD complements Kioxia's AiSAQ™ technology, which enhances scalable Retrieval Augmented Generation (RAG) performance by storing vector database elements on SSDs instead of costly, limited DRAM. This approach improves system and rack-level efficiency with higher storage density and lower power consumption per TB compared to lower-capacity SSDs.

Market Implications and Industry Response

The introduction of the LC9 Series SSD is poised to have a significant impact on the enterprise SSD market. In the third quarter of 2024, the enterprise SSD market experienced substantial growth, driven by robust demand from AI-related applications. Prices surged as suppliers struggled to keep pace with market needs, pushing overall industry revenue up by an impressive 28.6% quarter-over-quarter. Demand for high-capacity models was especially strong, fueled by the arrival of NVIDIA's H-series products and sustained orders for AI training servers.

Kioxia's strategic focus on high-capacity SSDs aligns with these market trends. The company's medium- to long-term growth strategy emphasizes the development of advanced SSD products and technologies that support the evolving demands of AI systems. Kioxia is developing the CM9 series, LC9 series, and other SSDs using the 8th generation BiCS FLASH™. The CM9 series is a high-performance SSD for AI systems designed to maximize GPU capabilities, while the LC9 series is a large-capacity SSD suited for use cases such as large databases used in inference.

Future Outlook

Kioxia's unveiling of the LC9 Series SSD underscores the company's commitment to innovation in the storage industry. By addressing the specific needs of AI applications and data centers, Kioxia is positioning itself as a key player in the evolving landscape of enterprise storage solutions. As AI workloads continue to push the boundaries of data storage, demanding higher capacities and faster access to vast datasets, the LC9 Series NVMe SSD from Kioxia can accelerate AI model training, inference, and RAG at scale.

The LC9 Series SSD is expected to be showcased at upcoming conferences, providing industry professionals with the opportunity to experience its capabilities firsthand. As the demand for high-capacity, high-performance storage solutions grows, Kioxia's latest offering is well-positioned to meet the needs of modern AI and data center applications.