• This topic has 1 reply, 2 voices, and was last updated May 14, 2020 by Contara T.

VMXNET3 DirectPath I/O Enabled

  • Jim C
    May 14, 2020 04:48:22 PM

    We have ESXi 6.5 in our environment.  We’re looking at turning off DirectPath I/O for any VMXNET3 adapters.  The VRA’s have it enabled.  Is that by design?  It is a ‘bug’ and turns on by default so we manually turn it off on our VM’s that we create.

    Contara T
    May 14, 2020 09:30:11 PM

    Hello,

    Contara from Zerto Support.

    The VRA is deployed with a VMXNET3 adapter, which is a 10 Gbps vNIC. A VRA cannot utilize multiple vNICs to improve throughput. This means that a single VRA is bound to 10 Gbps, or 1,250 MBps as a theoretical maximum.

    Thank you.

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