Intelligent site continuity for stretched clusters.In the case of a partition between the preferred and secondary data sites, ESXi650-201811002 enables vSAN to intelligently determine which site leads to maximum data availability before automatically forming a quorum with the witness. In other words, we can say that it is a direct competitor of MS VHD file format. Generally, it is used for cloud computing and virtualization.
Virtual Disk Image Files (VMDK) is used for storing data in order to use them in virtual machines like VMware Workstation, QEMU, Virtual Box, etc.