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Multipathing in Vmware.

jskfan
jskfan asked
Multipathing in Vmware.

if I understand When Configuring Multipathing in Vmware  we need at least 2 Vmkernel Ports and at least 2 vmnics.
I am not sure if each Vmkernel should be associated to only one vmnic or it can be associated to both vmnics

Thank you
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
see my EE Articles, which shows how to create this...

yes a VMKernel needs to be BOUND to a physical nic in the host.

(iSCSI is MPIO, it does not support team, and must be bound to a single nic, so there is a 1 to 1 relationship between iSCSI VMKernel and the vmnic)


HOW TO: Add an iSCSI Software Adaptor and Create an iSCSI Multipath Network in VMware vSphere Hypervisor ESXi 4.1

HOW TO: Add an iSCSI Software Adaptor and Create an iSCSI Multipath Network in VMware vSphere Hypervisor ESXi 5.0

(this is the same for all ESXi 4.0, 4.1, 5.0, 5.1, 5.5, 6.0, 6.5, 6.7 and  X.)

The GUI is just different later to coinfigure but the method is the same.

Author

Commented:
Thanks Andrew....

Regarding Vmkernel ports for iSCSI... is it best practice to create a separate vswitch from the one that contains VM port Group ?

I mean if you already have a vswitch that has VM Port Group and VmKernel Management port...you will create a separate vswitch with 2 vmnics and create 2 Vmkernel ports for iSCSI Multipathing with 2vmnics ?

OR
if the Host has enough physical adapters then probably it is better to create 3 vswitches , one for VM Port group with 2 vmnics, one for VM Kernel Management port with 2 vmincs and third vswitch for vmkernel port for iSCSI multipathing  also with 2 vmnics ?...
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Best Practice is as per my EE Articles.

and best practice has to how you create your networks is as picture

10NICs-with-annotations---.jpg
where the VMKernel vSwitch would contain two VMKernels for your iSCSI Storage network

Author

Commented:
So the best practice is to separate VM Port Groups , VM Kernel Management, VM Kernel Storage , each on separate vSwitch and separate vmnics
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
We are moving off-topic now and not longer discussing Multipath iSCSI.

But final thing on this - yes.

Author

Commented:
Thanks ..
we'll post another Q