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SNIA Developer Conference September 15-17, 2025 | Santa Clara, CA

Joshua Freilich

Principal Engineer

Pure Storage

Josh Freilich is a Principal Engineer at Pure Storage, where he co-designs software with Hyperscalers to support data storage at extreme scale. Over the past decade, he has led the development of innovative solutions in host-based NAND management, I/O scheduling, storage virtualization, and virtual memory management. He holds dozens of issued patents in these domains. Josh earned his Bachelor of Science in Computer Science and Applied Mathematics from Brown University, with a focus on systems architecture and probability theory.

Related Sessions

AI / ML

Optimizing Hyperscale Flash Storage: Innovations in large-capacity QLC, Host-Based FTL, Configurable Indirection Unit and Application-Optimized Data Placement

Hyperscale environments demand storage solutions that balance density, performance, and power efficiency—without compromising reliability. This session will explore how Pure Storage’s DirectFlash® Module (DFM) architecture and software innovations are enabling the seamless adoption of high-density QLC NAND in hyperscale deployments. We will examine how host-based Flash Translation Layer (FTL) and Pure’s DirectFlash software address the challenges of write amplification, power optimization, and drive endurance. Additionally, we will dive into Pure’s use of Linux userspace block device (ublk) drivers and io_uring to expose storage as regular block devices while enabling zero-copy data transfers. Attendees will gain insights into how a flexible, configurable software stack can efficiently support diverse performance and capacity use cases.

Joshua Freilich
Principal Engineer
Pure Storage
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