Market Overview
The AI storage supercycle: demand drivers, market forecasts, and the storage stack.
Global NAND Flash Market — Total vs. AI-Driven ($B)
TrendForce forecasts NAND revenue to grow 112% YoY in CY2026 to $147B, driven by AI infrastructure demand.
Latest Quarterly Revenue Growth (YoY %)
SanDisk leads all peers at +251% YoY. SK Hynix and Micron follow at ~+198% and +196%.
AI Storage Demand Drivers
Data Center AI Training
LLMs require petabytes of training data stored on high-speed enterprise SSDs. Checkpoint datasets alone can exceed 100TB per model.
AI Inference & KV Cache
Moving KV cache from expensive GPU RAM to NVMe SSDs is the fastest-growing NAND use case. Each inference request reads and writes gigabytes of context data.
Agentic AI Systems
Autonomous agents require persistent local memory for multi-step workflows. As agents proliferate, per-device NAND requirements grow exponentially.
AI PC Upgrade Cycle
New AI PCs require 2–4× more NAND for local model inference. The global PC installed base of ~1.5B devices represents a massive upgrade wave.
Physical AI & Robotics
Autonomous vehicles, industrial robots, and smart devices all require high-speed local NAND for real-time inference without cloud latency.
HDD Shortage Spillover
Severe HDD shortages are accelerating a shift toward NAND SSDs in bulk storage tiers historically served by HDDs, further tightening NAND supply.
The AI Storage Stack
From GPU memory to cold storage — each layer serves a distinct AI workload role.
| Layer | Key Vendors | Bandwidth | Cost/GB | Primary AI Use Case |
|---|---|---|---|---|
| HBM (GPU Memory) | SK Hynix, Samsung, Micron | 3.2+ TB/s | ~$10/GB | AI model weights in GPU |
| DRAM (System Memory) | Micron, Samsung, SK Hynix | 100+ GB/s | ~$3/GB | Active inference context |
| NVMe SSD (NAND Flash) | SanDisk, Samsung, Micron | 12+ GB/s | ~$0.10/GB | KV cache, vector DBs, checkpoints |
| HDD (Nearline) | WDC, Seagate | 0.3 GB/s | ~$0.02/GB | Training datasets, cold storage |
| Object Storage (Cloud) | AWS, Azure, GCP | Variable | ~$0.02/GB | Model archives, data lakes |
Market data sourced from TrendForce, IDC, Deloitte 2026 Hardware Outlook, AlphaTarget, and public company earnings releases as of April 30, 2026. Not financial advice.