SNIA Developer Conference September 15-17, 2025 | Santa Clara, CA
Learn how to create an NVMe Exported NVM Subsystems in a PCIe SSD Learn how to migrate a NVMe Exported NVM Subsystems between two PCIe SSDs Learn how to setup an NVMe Exported NVM Subsystems for interoperable migration
As SSD capacities increase beyond 16TB, the time to randomly precondition these drives has also increased from several hours to several days. Traditional methods involve a sequential write followed by multiple random writes to reach a steady state. We present Sprandom (SanDisk Pseudo Random) – a novel approach to random preconditioning that uses the Flexible I/O Tester (fio) to achieve near steady-state performance with just a single physical drive write. Our experiments show that using the Sprandom method, the random preconditioning time of large (> 64TB) drives can be reduced from days to hours.
This presentation explains how an NVMe™ PCIe SSD supporting multiple NVMe controllers can be used to create and migrate virtual NVMe SSDs (i.e., Exported NVM Subsystems). The commands used by a host managing these virtual SSDs are fully illustrated using animation and demonstrates the interoperability between different SSD vendors during migration. Come and see how the virtual NVMe SSD is abstracted from the underlying NVMe SSD for the migrating Virtual Machine.