CoreWeave Selects B2 Cloud Storage for High-Performance AI Storage at Exabyte Scale

CoreWeave’s AI cloud platform supports some of the world’s most demanding AI workloads, where massive datasets move through training, inference, checkpointing, data preparation, model outputs, and RAG. As those workloads scale, customers need storage that keeps data durable, accessible, and cost-effective without forcing every dataset into the highest-performance tier.

CoreWeave set out to expand its object storage offering using HDD-based technology. Building in-house would take time and pull engineers off higher-priority work. After reviewing Backblaze's public operating data and running a large proof of concept, CoreWeave chose B2 Cloud Storage for S3-compatible object storage. What set Backblaze apart: its software and operational layers can scale at Coreweave’s speed without performance or pricing degradation.

With Backblaze, CoreWeave can add multi-exabyte object storage capacity while keeping its teams focused on AI infrastructure, data delivery, and GPU performance. Backblaze gives CoreWeave a durable, high-throughput storage layer that fits into its broader platform, supports data mobility, and scales with the economics AI workloads require.