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NVM Express (NVMe)

  • A high performance protocol designed for communicating with Non-Volatile Memory (NVM).
  • Originally designed for PCIe but now also works over RDMA and TCP/IP, which called NVMe over Fabrics.
  • Now over 50% of all new SSDs sold are NVMe (rather than SATA/SAS).
  • A healthy roadmap of upcoming features:
    • Low-latency (e.g. Optane).
    • Computational Storage (compute on/near SSD).
    • IO Quality of Service
Previous System call overhead
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