When you download the VDDK, you also get several command-line utilities that are invaluable for testing: The core library for disk access. mount: A utility to mount VMDK files as local drives.
Pre-written code to help you understand how to initialize the library and connect to a server.
Select the zip or tar.gz package for your operating system (Windows or Linux). Which Version Should You Choose?
If your backup application is 32-bit, you need the 32-bit VDDK libraries (though VMware has largely deprecated 32-bit). Most modern environments require 64-bit.