VMWare ESXi

VMkernel

VMkernel is a POSIX-like operating system developed by VMware and gives same functionality similar to that found in other operating systems, such as process creation and control, signals, file system, and process threads. It is designed specifically to support running multiple virtual machines and provides such core functionality as:
• Resource scheduling
• I/O stacks
• Device drivers

File System
VMkernel uses a simple in-memory file system to hold the ESXi configuration files, log files, and staged patches
ESXi configuration files are found in /etc/vmware and log files are found in /var/log/vmware. Staged patches are uploaded to /tmp.

This file system is independent of the VMware VMFS file system used to store virtual machines


What is VMware Convector:

It is used to convert the physical server into a VM machine and convert the format of VMs between VMWare plateforms. Also, it helps to convert the third party image to VM.