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  • 1.  Help with VMWare Network Config

    Posted Sep 10, 2015 06:24 PM

    Hi All,

    I was wondering if someone could help me with the best setup for my ESXi 6 networking config.

    I have 5 NIC Ports I want to use to optimize the performance of my server. Split iSCSI traffic away from the Virtual Machine traffic.

    Right now it only appears as though one of my ports is being used "vmnic1" (See Performance usage details below)

    His my network setup.

    vSwitch0 and vSwitch1 are split physically and are patched though 2 different switches. VM's through a main switch (vSwitch0) and iSCSI through a dedicated switch (vSwitch1).

    I am using a QNAP as my storage.

    Should I split the iSCSI onto it's own subnet? I'm not an networking expert by any means and would appritiate any advice on how I should set this up to achieve the best performance...

    Hope someone can help!


  • 2.  RE: Help with VMWare Network Config

    Posted Sep 10, 2015 07:44 PM

  • 3.  RE: Help with VMWare Network Config

    Posted Sep 11, 2015 07:44 AM

    Hi Porto,

    Thank you for the tip...

    I have a question about the QNAP Best Practice guide. They use some huge IP ranges for there subnet masks /23 and /16

    I only have 10 users.

    Currently all my users are on the subnet should I have my iSCSI and VMHost setup on a different subnet and do I need to create a route between the two subnets to be able to access the VMHost?

    I was thinking about maybe doing this:

    Users/PC's: /24

    VMHost: /24

    QNAP and iSCSI vSwitchs /24

    Is this correct?

    I have 5 NIC ports available to configure now I have added a new 4 port NIC. What would be the best way to allocate the posts?

    2 iSCSI

    2 VM's

    1 Host Mgmt

    Look forward to hearing from you! :smileyhappy:

  • 4.  RE: Help with VMWare Network Config

    Posted Sep 14, 2015 04:59 AM


    I would suggest setting up the management Network vmnic with failover, and breaking up the iSCSI VMkernel to vmnics.

    So have say:


         VM Network,                    Vmnic 3 and 2, both active.

         Management Network       Vmnic 1 active, 2 and 3 standby

         iSCSI 1                            Vmnic 5 Active, 4 Unused

         iSCSI 2                            Vmnic 4 Active, 5 unused

    I have no experience with Qnap Iscsi but you ll likely also want to turn Jumbo frames on for the Iscsi Uplinks.

    For the question around why you are only seeing traffic on Vmnic1, could you share the Load Balancing setting under the VM network properties.