iSCSI vmhba and vmnics - how are they related

[eugene123]

Greetings!

As I'm learning the scripted install for ESX 4, I've noticed that I can not explain to myself how is my vmhba34 related to my vmnic1 (the one that I;m using to connect to the iSCSI)

My script is as follows:

"...

esxcfg-firewall -e swISCSIClient

esxcfg-swiscsi -e

vmkiscsi-tool -D -a 10.0.0.2 vmhba34

esxcfg-swiscsi -s

esxcfg-rescan vmhba34

..."

Nowhere in here do I see an explicit association between the vmhba34 and vmnic of any kind,

How is this done (i.e. where is this association ever being made)?

-Eugene

[Paul_Lalonde]

There is no direct association between an iSCSI software initiator (vmhba34) and a physical NIC (vmnic). A vmhba34 iSCSI initiator is simply a software construct that resembles a hardware storage adapter. This iSCSI initiator can leverage any VMkernel NIC (vmknic) portgroup on a vSwitch that maintains at least one outbound physical NIC (vmnic).

Paul

[AntonVZhbankov]

As already said, vmhba34 is just software, and you can make iSCSI traffic go through any vmnic. It can be configured in networking section - software iSCSI uses VMkernel interface with "IP storage" checkbox enabled.

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MCSA, MCTS, VCP, VMware vExpert '2009

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