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Slow iSCSI throughput on ESX with Intel XL710 NICs

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Category:
ontap-9
Specialty:
SAN
Last Updated:

Applies to

  • All NetApp products
  • ESXi 6.5 and higher
  • iSCSI connectivity

Issue

  • There may be slow or inconsistent throughput with VMs on iSCSI datastores
  • Pause frames may be seen if flowcontrol is enabled
  • Throughput may be up and down, but no packet loss or obvious TCP delays are seen.

 

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