The Virtual Disk Development Kit (VDDK) is a collection of C/C++ libraries, code samples, utilities, and documentation to help you create and access VMware virtual disk storage. The VDDK is useful in conjunction with the vSphere API for writing backup and recovery software, or similar applications.
Virtual Disk Development Kit 5.5
Released 22 SEP 2013 | Download SDKs
VDDK 5.5 is a new release to support ESXi 5.5 and vSphere 5.5.