DDN has raised $310 million, with a major $300 million Series B on January 23, 2025 led by Blackstone, valuing the company at $5 billion. Founded in 1998, DDN builds high performance storage systems for HPC, big data analytics, and AI training workloads. Its products include parallel file systems, NVMe accelerated arrays, burst buffers, and object storage appliances. New capital supports product expansion, NVMe scale out deployments, and global channel growth to meet rising demand for simulation, analytics, and AI training at scale.