Vmware Flat File 💎

In VMware architecture, a virtual disk is represented by two separate files. It is crucial to understand the distinction between them:

In VMware virtualization, a "flat file" typically refers to the file, which is the raw disk data file for a virtual machine (VM). Unlike the descriptive .vmdk file (a small text header), the flat file contains the actual binary data written to the virtual disk. vmware flat file

Never try to rename a -flat.vmdk file directly. If you do, the descriptor file (the small .vmdk ) will no longer point to the correct filename, and your VM will fail to power on with an error like "The parent virtual disk has been modified." In VMware architecture, a virtual disk is represented

The term "flat" refers to the fact that the storage is presented as a flat, contiguous block of data to the VM. It does not mean the file is empty (though it may contain empty sectors if it is a thick disk). It is the "flat image" of the disk. Never try to rename a -flat

: Unlike "sparse" disks that grow as you add data, a traditional flat file is thick-provisioned . It immediately occupies the full capacity assigned to the virtual disk on the physical storage, filled with zeros where data hasn't been written yet.

myVM.vmdk (descriptor – text) myVM-flat.vmdk (actual disk data – binary)