How to configure Software iSCSI network on ESXi5.1 with Cisco UCS

[carrie1]

Hi,

I installed ESXi5.1 on cisco UCS. and plan to configure sw iscsi on esxi5.1

The network configuration on UCS:

Create two vNIC under vNICs and bind the new vnic to vlan2000.

vlan 2000 with be binded to two Uplink Eth interfaces in fabric A and fabric B.

Network configuration on ESXi5.1:

Add vmkernel to sw iscsi:

Once configured two vmkernel to sw iscsi network, find the format disk in windows VM is very very slow.  If only one vmkernel added to network, then it works well.

Does anyone know why the performance is very slow?  How to modify the configuration?

Thanks.

[TommyFreddy]

Please have a look . this may solve the problems .. http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=100808...

[carrie1]

Hi,

Thanks for your help.

Currently my configuration as below.

I think this configuration should be valid, I do not use route in software iscsi, the initiater and target are in the same subnet.

Use port binding instead of nic teaming.

vmk1 - use  vmnic2 unused vmnic3

vmk2 - use  vmnic3 unused vmnic2

But with this configuration, I think multipath should be work well. but the rescan is still very very slow. If I remove one vmk from port binding, then it works fine.

Would you pls help to have a look my config? whether it is valid?

Thanks.