Which disk type is always created for each VM when creating new VMs with Machine Creation Services?

Which disk type is always created for each VM when creating new VMs with Machine Creation Services?

• A. Personal vDisk
• B. Differencing (Diff) disk
• C. Identity disk
• D. Full-clone base disk

Answer: (C)

In Machine Creation Services, a per-VM identity disk is created automatically for every new VM. This tiny disk stores the machine’s identity data—things like the computer name, machine SID, and domain-related credentials—so the system can preserve a unique identity for that VM even when the base image is re-imaged or re-provisioned. This separation ensures the VM can rejoin the domain and maintain licensing and identity consistency without altering the shared base image. Other disk types serve different purposes: a differencing disk records changes since the base image, a full-clone base disk is used when provisioning full copies of the image, and a Personal vDisk holds user-specific data. The identity disk, however, is the one that is always created per VM to maintain its distinct identity across refreshes.

In Machine Creation Services, a per-VM identity disk is created automatically for every new VM. This tiny disk stores the machine’s identity data—things like the computer name, machine SID, and domain-related credentials—so the system can preserve a unique identity for that VM even when the base image is re-imaged or re-provisioned. This separation ensures the VM can rejoin the domain and maintain licensing and identity consistency without altering the shared base image.

Other disk types serve different purposes: a differencing disk records changes since the base image, a full-clone base disk is used when provisioning full copies of the image, and a Personal vDisk holds user-specific data. The identity disk, however, is the one that is always created per VM to maintain its distinct identity across refreshes.