How Alex Bouzari’s DDN Turned Niche Supercomputing Storage into a $5bn AI Engine

DDN’s Unlikely Journey from Physics Labs to the Heart of the AI Boom

Alex Bouzari is not your typical tech CEO. He designs his own Regency-inspired suits, sports crocodile-skin shoes and has been gently mocked by Nvidia’s Jensen Huang for his “inappropriate” style. But the flamboyant founder of DataDirect Networks (DDN) has built a storage technology company that is suddenly indispensable to the world’s largest AI projects.

DDN, founded in 1998 and based in Chatsworth, California, originally supplied ultra-fast storage for the handful of supercomputing labs where scientists needed to feed data to machines capable of a quintillion calculations per second. Its software splits massive files and streams them across thousands of drives, keeping the “highway” of data free of jams. That niche delivered steady but modest growth for two decades.

Everything changed when Nvidia started clustering its GPUs into AI supercomputers. The same bottleneck that had plagued traditional supercomputers—getting data to the processors fast enough—crippled early AI clusters. “The storage system just died,” recalled Marc Hamilton, an Nvidia vice president. “We brought in DDN and it just worked.” That partnership opened the floodgates: DDN now counts Elon Musk’s xAI and multiple governments building national AI supercomputers among its clients.

Revenue jumped from roughly $400m in 2024 to $500m a year later, and the company is on track to double to $1bn in 2026. In January 2025, Blackstone bought a stake for $300m, valuing DDN at $5bn and giving the 65-year-old Bouzari and co-founder Paul Bloch paper fortunes of around $2bn each. The firm, which once nearly went bust after a disastrous venture capital round, now supplies the data plumbing that keeps the AI revolution from grinding to a halt.

Why Nvidia, xAI and Governments Can’t Get Enough of DDN’s Data Engine

Nvidia’s Stamp of Approval

DDN’s core selling point is brutally simple: without its software, expensive GPU servers often sit idle two-thirds of the time. By orchestrating data delivery so that every graphics processor is fed continuously, DDN claims to make those $500,000 Nvidia servers “rentable and productive.” That message resonated with executives already reeling from the sticker shock of AI hardware, turning DDN from a niche vendor into a must-have layer in the AI stack.

The $1bn Revenue Run Rate and the Margin Revolution

For years, DDN sold its software bundled with its own disk hardware, but that model limited its addressable market. In 2023 it finally unbundled and began offering the software independently, a move that dramatically lifted profitability. Gross margins on software exceed 90%, compared with about 60% on hardware. The shift not only boosted the bottom line but also allowed DDN to sell into data centres that already source their own drives, accelerating the sales momentum that Blackstone’s deal now validates.

Vast Data and the Fight for AI Storage

DDN’s sudden scale has attracted well-funded rivals. New York-based Vast Data, valued at $30bn after raising $1bn in April, already supplies cloud giant CoreWeave and AI players Nebius and Mistral. Smaller challengers like Weka and Hammerspace are winning deals too, while Dell, NetApp and others are belatedly responding to the AI storage wave. DDN’s biggest vulnerability is that it was slow to embrace a software-only sales model, ceding valuable time to competitors who now offer fully integrated AI data platforms.

Blackstone’s $300m Bet and the Texas Mega-Project

Blackstone’s investment does more than provide capital; it gives DDN privileged access to the private equity giant’s portfolio of data centres and its client relationships. Bouzari is already pushing the boundaries further by designing a new data centre in Wheeler, Texas, that could scale to 1.3 gigawatts—comparable to a Meta campus and enough to power a million homes. The projected price tag of over $60bn is a monumental gamble, but if realised it would turn DDN from a supplier into an infrastructure operator, potentially locking in customers for decades.

What DDN’s Ascent Means for Competitors, Investors and AI Architects

For AI infrastructure buyers: DDN’s software-only licensing, adopted only since 2023, can now be negotiated separately from hardware, letting you slash GPU idle time without being tied to its server cabinets.

For competitors like Vast Data and Dell: DDN’s 90% software margins and Blackstone’s distribution muscle raise the stakes; undercutting on price alone won’t work, and a compelling total-cost-of-ownership story that matches DDN’s proven partnership with Nvidia is essential.

For investors watching the AI supply chain: The storage layer is finally catching up with compute, and companies that can demonstrably improve GPU utilisation—like DDN—may command premium valuations even as the AI capex cycle matures. Watch whether the Wheeler data centre project secures financing; a go-ahead would signal that DDN aims to be far more than a storage software vendor.

For xAI and government clients: DDN’s capacity to handle exascale workloads is proven, but its reliance on a single data-delivery architecture creates a concentration risk; ensure you have fallback arrangements as competition from Vast Data and others intensifies.