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• .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.