VMworld 2015: Future of SDS in 3 years

Session CTO6453

  • Speaker goes over various workloads that vary widely in terms of their requirements (big data, high IOPS, etc.)
  • What do Linux containers need from Storage? Ability to copy and clone root images. Isolated namespaces between containers, QoS controls between containers.
  • Containers and fast clone using shared read-only images
  • Docker’s direction: leverage native copy-on-write filesystem
  • Shared data: containers can share filesystem within host
  • Container storage use cases: unshared volumes, shared volumes, persistent to external storage

Storage Platforms

  • Latencies: object storage – 1s, magnetic storage – 10ms, capacity SSD – 1ms, NVMe SSD – 10us, NVM – 500ns, DRAM 100ns
  • 3D flash is becoming so cheap, 15K drives are fading from the market
  • 3D NAND flash is the ‘capacity flash’
  • NVDIMMs are coming with various types
  • Intel 3D XPoint technology – non-volatile, 1000x higher write endurance than NAND, 1000x faster than NAND, 10x denser than DRAM
  • Flash is separated into two categories: IOPS and capacity

Speaker covers various topologies such as scale-out SDS, hyperconverged SDS (Nutanix), etc.

Storage fabrics: iSCSI (slow), FCoE, and NVMe over Ethernet,  PCIe rack-scale compute

SDS hardware futures – Magnetic storage is being pushed out

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