O'Reilly logo

Getting Started with Windows VDI by Andrew Fryer

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Virtual Hard Disks

In server virtualization, a physical disk is represented by a single file, a Virtual Hard Disk (VHD), and a VM will have one or more of these. In Hyper-V, VHDs have either the VHD or VHDX extension, where VMware uses the VMDK format. The VHD format came out with Hyper-V in Windows Server 2008, while the newer VHDX format was introduced with Windows Server 2012. VHDX has a number of advantages over the older format, but both are supported in Windows Server 2012 R2. They have the following properties:

  • VHD is limited to 2 TB, whereas VHDX can be up to 64 TB, the limit for a New Technology File System (NTFS) volume
  • VHDX has the concept of physical and logical block sizes to run much faster on larger physical disks of 4 KB block size ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required