Installing and Configuring Windows Server 2012 — Question 17

You have a server named Server1 that runs Windows Server 2012 R2. Server1 has the Hyper-V server role installed.
An iSCSI SAN is available on the network.
Server1 hosts four virtual machines named VM1, VM2, VM3, and VM4.
You create a LUN on the SAN to host the virtual hard drive files for the virtual machines.
You need to create a 3-TB virtual hard disk for VM1 on the LUN. The solution must prevent VM1 from being paused if the LUN runs out of disk space.
Which type of virtual hard disk should you create on the LUN?

Answer options

• A. Dynamically expanding VHDX
• B. Fixed-size VHDX
• C. Fixed-size VHD
• D. Dynamically expanding VHD

Correct answer: B

Explanation

The correct answer is B, Fixed-size VHDX, because this type of virtual hard disk pre-allocates the specified space and does not rely on available disk space during runtime, thus preventing VM1 from pausing if the LUN runs out of space. Dynamically expanding VHDX (A) and dynamically expanding VHD (D) both grow as data is added but can pause the VM if space is insufficient. Fixed-size VHD (C) is an older format and does not support the features available in VHDX.