How cloud architecture is reinventing primary storage for the AI era
AI has sparked a race to build ever more powerful infrastructure, with headlines dominated by GPUs, networking and energy demand.
But behind the scenes, another part of the technology stack is undergoing an equally significant transformation: storage.
As AI models grow larger and enterprises retain more data for training, inference and retrieval, storage is no longer simply where information resides.
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It has become an active part of AI infrastructure, responsible for feeding compute efficiently, supporting vast datasets and helping organizations balance performance with cost.
Senior Vice President, Cloud Storage Business, Seagate.
That shift has fundamentally changed what primary storage looks like in modern cloud environments.
Historically, primary storage meant tightly coupled block or file systems sitting close to compute.
Today’s hyperscale cloud providers have taken a different approach, treating object storage as the persistent system of record while software coordinates how data is stored, protected and accessed across distributed infrastructure.
The move to cloud computing
The move to cloud computing didn’t simply increase the amount of storage organizations needed. It fundamentally changed how storage had to work.
Traditional enterprise storage was built around tightly coupled systems where applications interacted directly with file systems. That model worked well when infrastructure was relatively contained. At hyperscale, however, coordinating millions or billions of files across distributed environments introduces complexity that limits scalability.
Cloud providers responded by redesigning storage around software-defined architectures that separate how data is managed from where it is physically stored. Rather than treating storage devices as isolated resources, modern cloud platforms orchestrate entire fleets of storage through software, allowing them to scale far beyond the limits of traditional enterprise architectures.
AI has only accelerated this transition. Training large models, serving inference and retaining ever-growing datasets all place sustained demands on shared infrastructure, making software-defined storage more important than ever.
Although every hyperscale platform has evolved differently, the same architectural ideas appear time and again. Four principles in particular have become fundamental to supporting AI at scale.
1. Object storage is designed around sequential data movement
Traditional cloud storage systems frequently modify files in place. At hyperscale, continually updating data across distributed environments becomes increasingly difficult to manage.
Object storage takes a different approach. Rather than overwriting existing data, new versions are typically written as separate objects. That naturally favors large, sequential data flows, allowing storage systems to operate more efficiently as datasets continue to grow.
As AI workloads generate larger datasets, frequent checkpointing and continuous data movement, designing storage around sequential throughput becomes increasingly important.
As organizations store billions or even trillions of objects, tracking where everything lives becomes just as important as storing the data itself.
Rather than asking storage devices to manage both data and metadata, cloud platforms increasingly separate these responsibilities. Dedicated software layers handle object locations, namespaces and system coordination while storage media focuses on delivering scalable capacity.
Separating these functions makes infrastructure easier to scale while allowing storage systems to concentrate on what they do best: storing vast amounts of data efficiently.
3. Resilience comes from architecture, not individual devices
Cloud providers assume that, somewhere across thousands of servers and storage devices, failures will happen. Rather than relying on individual hardware to eliminate every fault, modern architectures distribute data intelligently across large storage pools.
Techniques such as erasure coding allow platforms to recover data efficiently while maintaining availability and reducing the overhead associated with traditional replication strategies.
The result is infrastructure that remains resilient even as AI workloads continue to grow in size and complexity.
4. Intelligent data staging protects performance
AI rarely produces smooth, predictable storage workloads. Training jobs, inference requests and application traffic often arrive in bursts, placing sudden pressure on infrastructure.
Rather than writing every request directly to capacity storage, cloud platforms increasingly use flash and memory as staging layers. These absorb incoming traffic before organizing data into larger, more efficient writes.
This allows organizations to maintain responsive applications while making better use of high-capacity storage as AI workloads become increasingly demanding.
Software has become the defining layer
Taken together, these four principles point to a broader industry shift. Storage performance is no longer determined solely by faster hardware. Increasingly, it is software that decides how efficiently infrastructure performs by orchestrating data movement, coordinating metadata and balancing workloads across distributed systems.
That evolution has fundamentally changed the role of primary storage. Rather than serving individual applications or servers, storage increasingly underpins shared object platforms that support analytics, cloud services and AI workloads simultaneously.
In other words, primary storage is no longer defined simply by where data resides. It is defined by how effectively software enables that data to move, scale and remain available across distributed infrastructure.
A new definition of primary storage
The rise of AI has accelerated changes that cloud providers have been making for years. Primary storage is no longer defined by proximity to compute or by storage hardware alone. Increasingly, it is software-managed, globally distributed and designed to balance performance, resilience and economics at enormous scale.
For organizations investing in AI, storage decisions can no longer focus purely on capacity or latency. Understanding how software, data movement and storage media work together has become just as important.
The organizations that succeed won’t necessarily be those deploying the most hardware. They’ll be those that build storage architectures capable of feeding AI workloads efficiently while keeping infrastructure scalable, resilient and economically sustainable.
In modern cloud environments, primary storage is no longer simply where data lives. It has become one of the technologies that determines how effectively AI can scale.
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AI has sparked a race to build ever more powerful infrastructure, with headlines dominated by GPUs, networking and energy demand. But behind the scenes, another part of the technology stack is undergoing an equally significant transformation: storage. As AI models grow larger and enterprises retain more data for training, inference…
