You have a computer that runs Windows 7. The computer contains one hard disk. The hard disk is
configured as shown in the following table.
You install a new 250-GB hard disk in the computer.
You need to ensure that all the files on the computer are available if a single disk fails.
What should you do?
A.
Create a mount point on C and D and then create a striped volume.
B.
Create a mount point on C and D and then create two striped volumes.
C.
Convert both disks to dynamic disks and then create a mirrored volume.
D.
Convert both disks to dynamic disks and then create two mirrored volumes.
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.