GoKawiilFADU unveils FS-SSD that embeds the filesystem in the drive's controller
Seoul-based SSD controller maker FADU introduced File-Semantic SSD (FS-SSD) at the 2026 OCP Global Summit, a design that moves filesystem logic into the SSD so GPUs, DPUs, and NICs can access files without a host filesystem, block layer, or storage-server CPU. In FADU's preliminary NFS-over-NVMe test on its FC6161 Gen6 controller, throughput held around 460,000 ops/s whether the server used 16 cores or just one, far outperforming Linux NFS-over-RDMA, which dropped from about 150,000 to 40,000 ops/s. FADU says the technology is still under active development, with Gen6-host results expected by Q1 2027 and partner samples by Q3 2027.
GoKawiil's interpretation of the reporting above, not reported fact.
By offloading filesystem operations onto the drive itself, FADU's approach could reduce the CPU overhead that the company says normally consumes roughly 30% of cycles during GPUDirect Storage workloads, potentially freeing server CPUs for other tasks in data-heavy AI and storage pipelines. Because the figures come from FADU's own preliminary testing rather than independent benchmarks, the real-world performance and compatibility gains remain unverified until partner samples ship in 2027. The choice of a lightweight, stateless NFSv3 protocol suggests FADU is prioritizing broad compatibility and low firmware complexity over deeper feature support.
- FADU's FS-SSD embeds filesystem logic directly in the SSD controller, eliminating the host filesystem and block layer from the data path.
- Preliminary tests show FS-SSD sustaining ~460,000 ops/s regardless of server core count, versus NFS-over-RDMA's sharp drop-off.
- FADU plans Gen6-host results by Q1 2027 and partner samples by Q3 2027, but the technology remains under active development.
Source: tomshardware.com — Shane Downing, 2026-10-21
Published there as: “FADU puts the filesystem inside the SSD's flash to bypass host CPUs”
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