Disable iSCSI software adapter
Remove physical adapters from existing iSCSI vswitch
Attach physical adapters to new iSCSI vswitch
Map VMKernel ports on a 1:1 basis to the 4 individual LAN adapters
Enable iSCSI software adapter
This will work. Keep in mind that the iSCSI vmkernel ports don't have to be on the same vSwitch. They can be mixed and matched however you'd like.
If the only reason to move the PNICs to the new vSwitch is to enable jumbo frames, you can move two of them to the new switch, make the 1-to-1 mapping, and start using those for iSCSI traffic, then remove the other two from the original switch, attach them to the new switch, and bring them up later. This way, you should only momentarily lose iSCSI connectivity when you make the transition from the original vSwitch to the new one.
Remember to:
- Add the vmknics to the iSCSI configuration.
- Enable jumbo frames on both the vSwitch and each of the vmkNICs.
Both of these topics are covered pretty well in
http://virtualgeek.typepad.com/virtual_geek/2009/09/a-multivendor-post-on-using-iscsi-with-vmware-vs...
It's worth a read if you haven't, already.
Andy
