You will want to read this post on Dell's 'delltechcenter' website. It's a very useful document: [URL]   I recommend that you split your iSCSI into 2 different vSwitches with 1 NIC each. If you are absolutely determined about using a single vSwitch with 2 VMKernels on 2 different subnets with 2 NICs, you need to isolate your VMkernels to each only use 1 NIC. You can do this in the vSphere client by going to the vSwitch and then the VMkernel properties. On here you go to the NIC teaming tab, override the defaults. On iSCSI01 move vmnic2 down to "unused", and on iSCSI02 move vmnic1 down to unused.   If you then pull another "esxcfg-vswitch -l", it'll look something like this:   PortGroup Name        VLAN ID  Used Ports  Uplinks   Internal Network      0        0           vmnic1,vmnic2   iSCSI02               0        1           vmnic2   iSCSI01               0        1           vmnic1     Other than that, I'd suggest to check if your iSCSI switches support jumbo frames, flow control, portfast (spanning-tree option) and maybe even multicast/broadcast storm control (leave unicast storm control disabled though (if you cannot individually set these 3, leave all 3 disabled)). If your switch can be optimized for iSCSI, I'd check that link and use that to complete recreate your iSCSI setup (from the command line) to add support for jumbo frames for the iSCSI traffic (and maybe even for vMotion if you have that licensed).
Hi Everyone I'm setting up an MD3220i with two switches for redundancy and one ESXi server. I've followed all the documentation but would like to run it by everyone as I'm not sure I've done it right. I've enclosed a diagram of exactly how my setup looks (except for my ESXi server only has two port, so one line into each switch) and placed my IP configurations for the PowerVault at the bottom of the post. ESXi: I've created a switch with virtual kernels for each physical port and have bound them to each physical port, configuration below iSCSI01 vmk1: 10.0.1.3 iSCSI02 vmk1: 10.0.1.4 I've carved up LUNs on the PowerVault. Now my questions are as follows: As you can see, my weak points are IP Networking. What Im really looking for are simple explanations, I've read a lot of documentation provided by Dell and to be honest I've just confused myself.  Any information would be great. Thanks everyone.   [IMAGE]     Below is my setup: Controller 0: IN 0 Port:   IPv4:    IP address: 10.0.1.1    Mask: 255.255.255.0    Gateway: 10.0.0.10  IN 1 Port:   IPv4:    IP address: 10.0.2.1    Mask: 255.255.255.0    Gateway: 10.0.0.10  IN 2 Port:   IPv4:    IP address: 10.0.3.1    Mask: 255.255.255.0    Gateway: 10.0.0.10  IN 3 Port:   IPv4:    IP address: 10.0.4.1    Mask: 255.255.255.0   Controller 1:  Management Port:   IPv4:    IP address: 192.168.69.36    Mask: 255.255.255.0    Gateway: 192.168.69.37  IN 0 Port:   IPv4:    IP address: 10.0.1.2    Mask: 255.255.255.0    Gateway: 10.0.0.10  IN 1 Port:   IPv4:    IP address: 10.0.2.2    Mask: 255.255.255.0    Gateway: 10.0.0.10  IN 2 Port:   IPv4:    IP address: 10.0.3.2    Mask: 255.255.255.0    Gateway: 10.0.0.10  IN 3 Port:   IPv4:    IP address: 10.0.4.2    Mask: 255.255.255.0    Gateway: 10.0.0.10            
MD3220i Setup with ESXi - IP Addressing & Subnetting