You require fault tolerance for your operating system so that your computer running Windows 7 Home Premium can still boot up if a disk fails.

You have two disks and unallocated space on your second disk.

What do you do?

A.
Create a VHD and install an image of your computer on the VHD. Use BCDEdit to make the VHD bootable.256.

B.
Create a RAID-0 volume.

C.
Create a RAID-1 volume.

D.
Create a RAID-5 volume.

Explanation:
Creating a Mirrored Volume (RAID-1)
A mirrored or RAID-1 volume provides availability and fault tolerance but does not improve performance. It uses two disks (or two portions on separate disks) that are the same size. Any changes made to the first disk of a mirror set are also made to its mirror disk. If the first disk fails, the mirror is broken and the second disk is used until the first is repaired or replaced. The mirror is then re-created, and the information on the working disk is mirrored on the repaired disk. The disadvantage of RAID-1 is that you need (for example) two 200-GB disks to hold 200 GB of data. The advantage is that you can mirror a system disk containing your operating system.

You create a mirrored volume using a very similar procedure to the one that creates a striped volume, except that you right-click the first disk of your mirror and click New Mirrored Volume to start the appropriate wizard. You then select the second disk. The second disk needs to have a portion of unallocated space that is at least as large as the disk you want to mirror. The drive letter for a mirrored volume is the same as the drive letter of the first disk.

You can also use the Diskpart tool to create a mirrored volume. At the DISKPART> prompt you first use the select disk command to select the first disk. You then enter a command with the syntax add disk=<n> to specify the mirror disk.