Key Highlights
- Shares of Backblaze climbed 20% Tuesday following the announcement of a $335 million, five-year storage partnership with CoreWeave
- The agreement involves multi-exabyte capacity provision for CoreWeave’s managed storage systems
- Backblaze will deploy HDD-based infrastructure to power performance tiers within CoreWeave AI Object Storage
- Current CoreWeave AI Object Storage users can immediately access enhanced service tiers without modifying existing code
- CoreWeave’s client roster includes 9 of the 10 largest AI model providers globally
Backblaze (BLZE) shares skyrocketed 20% during Tuesday’s session after the cloud storage provider revealed a five-year, $335 million partnership with CoreWeave (CRWV) focused on data storage solutions.
The arrangement involves a multi-exabyte commitment—representing millions of terabytes in data capacity. Under the terms, Backblaze will deliver economical storage solutions to power specific segments of CoreWeave’s managed infrastructure ecosystem.
At the heart of this collaboration lies HDD-based storage architecture integrated into CoreWeave AI Object Storage platforms. Backblaze’s infrastructure will enable intelligent data distribution across various performance levels, ensuring high-performance resources remain available for demanding AI operations.
A significant advantage for existing users: clients currently utilizing CoreWeave AI Object Storage equipped with its proprietary LOTA distributed cache technology can immediately leverage new tier options without any coding adjustments.
Partnership Scope and Coverage
The storage framework is engineered to accommodate diverse phases of artificial intelligence development cycles. This encompasses model training processes, inference operations, checkpoint management, data preprocessing, model output handling, and retrieval-augmented generation (RAG) applications.
Backblaze CEO Gleb Budman emphasized the fundamental importance: “Storage is the foundation every AI workflow is built on — without it, even the world’s most powerful compute sits idle.”
CoreWeave VP Nick Hoover highlighted Backblaze’s proven expertise in managing sophisticated HDD-based systems at massive scale as the driving factor behind selecting them as a partner.
Backblaze’s global footprint extends to over 100,000 customers, with its platform specifically engineered for large-scale, budget-conscious storage addressing enterprise and data-heavy applications.
CoreWeave’s Market Standing
CoreWeave operates a comprehensive AI cloud ecosystem encompassing infrastructure components, cutting-edge technology, development tools, and support services. Its client portfolio spans premier AI model creators, enterprise organizations, and academic research institutions.
With 9 of the top 10 AI model providers among its clientele, this metric underscores the substantial storage requirements this partnership aims to address.
CoreWeave (CRWV) shares moved inversely Tuesday, declining 5.65% during the trading session.
BLZE retreated 0.85% in after-hours trading following its dramatic rally, though the 20% intraday climb represented one of the most significant single-session gains the stock has experienced recently.
The agreement’s five-year duration extends through approximately 2031, establishing a sustained revenue pipeline for Backblaze.



