EMC iscsi LUN with vsphere

sara2000
sara2000 used Ask the Experts™
on
In general we know that for iscsi , port binding is  recommended in vsphere. Do not know this applies to all the storage , I know equallogic does recomend port binding.
We plan to install vpshere ver6.0 with VNX.
What is the recommended practice for iscsi in VNX?
Is it port binding with multi-path?
or we can use nic teaming where port-binding is not applicable?
Based on the link below on page 40-45. look like EMC recommends nic teaming unless I understood wrongly.
https://www.emc.com/collateral/hardware/technical-documentation/h8229-vnx-vmware-tb.pdf
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Luciano PatrãoICT Senior Infraestructure  Engineer  

Commented:
Hi

There is configuration for NFS and iSCSI, the configuration is not the same.

And for iSCSI they use one vmkernel one vSwitch. So they use the portbinding but with different vSwitch.

If used only one vSwitch which contain multiple vmnic uplinks, each VMkernel (vmk) port used for iSCSI bindings must be associated with a single vmnic uplink. The other uplink(s) on the vSwitch must be placed into an unused state.

That is the proper way to configure the iSCSI and use multipathing

Jail
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
It only applies to iSCSI, and is the correct Best practice method of Multi pathing.

see my EE Article

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

Some Admins do use NIC Teaming, but it's often not supported.

I would suggest you obtain the latest documentation, and discuss with what the vendor recommends.

Your documentation states:-

Note: VNX is a multitarget architecture. While technically possible, port binding is not
supported on VNX.


So there you have it, nic teaming it is!
Luciano PatrãoICT Senior Infraestructure  Engineer  

Commented:
Andrew that is new for me.

We have some EMC and always use port binding.

When back to a PC need to double check the latest documentation from EMC.

Jail
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
It's on Page 45

Note: VNX is a multitarget architecture. While technically possible, port binding is not
supported on VNX.

Source
https://www.emc.com/collateral/hardware/technical-documentation/h8229-vnx-vmware-tb.pdf

So yes it can do it, but not supported, so I would recommend the supported approach, and no binding. But I would recommend discussing with EMC, because documentation and whitepapers, come and go, and people change their mind.

Also depends on EXACTLY what hardware you have purchased. You just state VNX which, is like me saying I've purchased a NetApp or VMware.
Luciano PatrãoICT Senior Infraestructure  Engineer  

Commented:
Yes i notice after you added that.

In my first reading did not notice.

We know that EMC is very FC, but i did not know that port binding was not supported by EMC.

But honestly is very rare for to use iSCSI(with Software initiator) with EMC

Author

Commented:
If we use NFS and iscsi then port binding is not recommended on page 45 (following conditions).
If we use vnx 5400 block device ,Do we still should not be  using port binding?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
It does say you can use port binding, but it's not supported. iSCSI is the protocol which uses port binding, not NFS.

we would recommend, not to use, as it states in the documentation, if you want a supported environment, but if you want a thumbs up clarify with EMC support.

Author

Commented:
Spoke to EMC partner who suggested the nic teaming since it is multi target as Andrew suggested.
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
as per EMC documentation.

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