In this video I'll show you how to enable the VMware Interactive Shell (vsish) on an ESX host. The vsish is normally only available on an ESXi host but in this video you will see and learn that it's also working on ESX. With vsish you can examine the VSI (VMkernel System Information) which can be useful when troubleshooting or adjusting advanced setting that are not exposed in the vSphere Client. My virtualization friend William Lam over at virtuallyGhetto has retreived a list with all the 250 hidden advanced settings. He created a great article about "What is VMware vsish?". I don't have to remind you that vsish is able to damage your system so use it with caution.