Using the vmkernel interface
Once the LUN is ready, the ESXi host needs to be configured to communicate with the iSCSI target. In ESXi, this is done on the vmkernel interface. A vmkernel interface is installed by default, but for storage it should be separated as much as possible. In this image, an additional vmkernel interface is being added.
Even though this configuration is a lab environment, I’m still separating the storage traffic to new interfaces.
Note that the default gateway cannot be changed AND is on a separate subnet. This is by design, as that is the first vmkernel interface and is a visual reminder that the storage traffic is separated from the other vmkernel traffic on vmnic0.
Rick Vanover is a software strategy specialist for Veeam Software, based in Columbus, Ohio. Rick has years of IT experience and focuses on virtualization, Windows-based server administration, and system hardware.