Hammerspace's 'Standard NFS' Achievement: A Technical Reality Check

Hammerspace announced in November 2025 that it achieved #18 on the IO500 10-node production benchmark using &ldquo;standard Linux, upstream NFSv4.2 client, and commodity NVMe flash.&rdquo; The company positioned this as proving that standard protocols can deliver HPC-class performance without proprietary parallel file systems. The achievement is real. The framing requires clarification: pNFS v4.2…