Windows will let you take multiple hard drives and combine them into a single striped volume (also known as RAID 0) so you can utilize all of the disks with a single drive. You will also get a performance gain with this configuration because it will write to all the drives at once using any free space on those drives.
Its similar to a spanned volume which wont give you the performance increase but will allow you to extend your volume if needed where the striped volume will not.
• Create a Spanned Volume With Multiple...
Neither a striped or spanned volume offers and data redundancy so if a disk fails then you are out of luck. On the other hand, you can also setup a RAID 1 mirrored volume with 2 disks to get some redundancy for your data.
• How to Configure RAID1 Mirrored Drive...
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