SanDisk has demonstrated a new high-capacity SSD that could redefine storage scalability for AI and cloud-based infrastructure. As revealed by the brand, this SSD is built on a fresh platform architecture designed to meet the growing performance and efficiency needs of hyperscale environments.
SanDisk’s 256TB NVMe SSD sets new capacity benchmark
SanDisk has demoed a 256TB NVMe SSD built on the company’s new UltraQLC platform. This storage solution combines BiCS8 QLC NAND, custom multi-core controllers, and advanced system-level tuning to deliver a new level of density and efficiency. The platform is developed to meet the evolving demands of AI-centric tasks such as data ingestion, processing, and the fast delivery of insights in large-scale data lake environments.
The SSD supports Direct Write QLC, which writes directly to QLC NAND without relying on SLC caching, improving performance and power loss safety. The BiCS8 QLC die used in this SSD doubles the density per chip while keeping the die size compact. SanDisk has also introduced UltraQLC power optimization through dynamic frequency scaling, which is projected to improve performance per watt by up to 10 percent.
Reliability enhancements include a Data Retention profile expected to reduce recycle rates by up to 33 percent, offering better drive lifespan and access stability. SanDisk has confirmed that the UltraQLC-based 256TB SSD and the SN670 128TB variant will launch in U.2 form factor in the first half of 2026. Additional form factors are expected to follow later in the year.
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