Which of the following statements is NOT correct about a pass-through disk?

• A. A pass-through disk must always be in an online state
• B. A pass-through disk is a virtual disk that is attached to the host
• C. A pass-through disk can be used while the virtual machine is running
• D. A pass-through disk is dependent on the host's physical disk

Answer: (A)

The statement that a pass-through disk must always be in an online state is not accurate. Pass-through disks can be in various states, including offline or even detached, depending on their management and the operational context within the virtualization environment.

A pass-through disk ordinarily refers to a physical storage device that is directly attached to a virtual machine rather than being managed by the hypervisor. This setup allows the virtual machine to access the disk as if it were a local drive. Thus, the other statements hold true.

For example, a pass-through disk is indeed a virtual disk that connects directly to the host, which enables it to utilize the physical disk's capabilities without hypervisor interference. This arrangement allows the virtual machine to use the pass-through disk while it is running, thus providing flexibility in resource management. Additionally, the operation of a pass-through disk hinges on the host's physical disk, affirming that it does not function independently from the host's storage configuration.