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files used by a VM

Short description of the files that are used by virtual machines (applies to VMplayer, VMserver and Workstation 5.5)

 

 

  File-extension    needed when
VM is moved
type size content
*.vmx yes   1-4 kb main configuration file
*.vmdk yes text 1-4 kb virtual disk descriptorfile
*.vmdk yes binary can be very large
maximum 950Gb
virtual disk of type monolithic-sparse
*0000000*.vmdk yes binary can be very large this file contains the changes since snapshot X
*.nvram no binary 8 kb non volatile RAM: contains current
settings of the virtual BIOS
*.vmem no binary nominal RAM this file only exists if you use
mainMem.useNamedFile = "true"
*s00*.vmdk yes binary can be very large maximum 2Gb this extension is used for the
data chunks of
growing-split disks
*0000000*-s00*.vmdk yes binary can be very large maximum 2Gb this file contains the changes since snapshot X
*f00*.vmdk yes binary can be very large maximum 2Gb this extension is used for the
data chunks of
preallocated-split disks
*0000000*-f00*.vmdk yes binary can be very large maximum 2Gb this file contains the changes since snapshot X
*flat.vmdk yes binary can be very large
maximum 950Gb
this extension is used for the
data chunk of
preallocated monolithic disks
*0000000*-flat.vmdk yes binary can be very large this file contains the changes since snapshot X
*.vmsn don't
move if present
binary varies contains current snapshotdata
like nvram and a copy of the vmx-file
example
*.vmsd don't
move if present
text varies descriptorfile for current snapshot
*.vmss don't
move if present
binary nominal RAM contains RAM of a suspended VM
*.REDO_a03180 only appears with running VMs binary can be very large this file is used when a disk is in
"independent-nonpersistent" mode
*lck only appears with running VMs   very small lockfile - is used to lock files that are currently in use

 

 

 

 

 


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