Explanation/Reference:
Explanation:
Storage Spaces can combine multiple hard drives into a single virtual drive. To create a storage space, you'll have to connect two or more additional internal or external drives to your computer to create a storage pool. You can also specify an arbitrarily large logical size. When your existing drive begins to fill up and nears the physical limit, Windows will display a notification in the Action Center, prompting you to add additional physical storage space. Selecting the Parity resiliency type allows Windows to store parity information with the data, thereby protecting you from a single drive failure.
References:
http://www.howtogeek.com/109380/how-to-use-windows-8s-storage-spaces-to-mirror-combine-drives/
https://technet.microsoft.com/en-us/library/cc772180.aspx
https://technet.microsoft.com/en-us/library/cc732422.aspx