Introduction
RAID 1 (Disk Mirroring) is a fault tolerance configuration. In this RAID data is coped simultaneously from one disk to another disk creating a replica of the disk. The advantage of this is if one disk fries we can use other drive and keep the system work. the main disadvantage of this is it create slight drag of performance.We can implement this by software RAID and hardware RAID.Minimum two disks required with software RAID we can use two use two volumes in single disk to mirror. This cuts the capacity by half .
Lets see how to create RAID 1 (Disk Mirroring)
NOTE :- Don’t try this in any production environment.Best way to try this by using virtual machine you can use Hyper-V if you use windows 8/8.1
Make sure the mirrored disk are dynamic not basic, basic not support for mirrored
Step 1

Win + R –> diskmgmt.msc
First we should open the disk management we can open disk management by administration tools or by run as shown above
Make sure mirrored disk are dynamic right-click on un allocated disk space and select mirrored volume
Step 3
Select the disk you want to mirror and add it to selected list from available list
Step 4
Select the amount of space you want to mirrored click next
Step 5
Assign a drive letter to your new volume click next
Step 6
Select the file format and volume label and tick the quick format option click next
Step 7
Prompt a wizard showing the summary of the volume click next now the volume was creating in your disk
Step 8
Verify new volume was showing the disk management as you see above there are two volumes in separate disks but in my computer you can see only one volume called mirror
Thanks hope you will get something from this post