.nvram - Este fichero contiene la CMOS/BIOS de la MV.

.vmdk – Estos ficheros son los discos duros que son creados con la MV. Hay tres tipos de ficheros que usan la extensión vmdk:

flat.vmdk - Este es el actual disco raw que es creado por cada MV

.vmdk file – This is the disk descriptor file which describes the size and geometry of the virtual disk file.

–delta.vmdk file - This is the differential file created when you take a snapshot of a VM (also known as REDO log)

.vmx file – This file is the primary configuration file for a virtual machine. When you create a new virtual machine and configure the hardware settings for it that information is stored in this file.

.vswp file – This is the VM swap file (earlier ESX versions had a per host swap file) and is created to allow for memory overcommitment on a ESX server.

.vmss file – This file is created when a VM is put into Suspend (pause) mode and is used to save the suspend state.

.log file – This is the file that keeps a log of the virtual machine activity and is useful in troubleshooting virtual machine problems.

.vmxf file – This is a supplemental configuration file in text format for virtual machines that are in a team.

.vmsd file – This file is used to store metadata and information about snapshots.

.vmsn file - This is the snapshot state file, which stores the exact running state of a virtual machine at the time you take that snapshot.