AWS New I/O optimized I4i - Storage Bandwidth

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We evaluate, the maximum number of bytes, or throughput, achievable by the instance, still with FIO but configured with the following parameters

  • 1MB blocks
  • Sequential access
  • Read then Write
  • Direct access to device without filesystems
  • libaio engine
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Assertions

  • The i4i brings a large gap in term of read bandwidth: +40%
  • It's even more obvious in write mode with +110%