Create new mirrored volume for data windows server 2012

OK, I didn't set it up but was given a Windows Server 2012 that was setup with Mirrored hard drives (not RAID).  Whoever set it up created a single partition C: for the entire drive.  I want to create a C: and D: (for data) partitions.

I used Easus Partition Manager for Servers to re-allocate the C: to 100GB leaving the blank hard drive for a D: drive.  I need to know how to create a D: drive that is Mirrored to the 2nd hard drive.  

Any help?
Thanks!
PAMurilloAsked:
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rindiCommented:
A mirror is RAID. Just use Windows diskmanagement to create a further mirror.
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PAMurilloAuthor Commented:
Tried that didn't work.  There is NO RAID management system.  Nowhere.
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rindiCommented:
Either it is mirrored and RAID, or it isn't mirrored and not RAID. What do you mean with "RAID management system"? You can use Windows built-in RAID, then you don't need anything 3rd party...
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PAMurilloAuthor Commented:
Please note attached images.  Attachment Capture1 States 'Mirrored'. Attachment Capture2 shows a single C: drive.

My objective is to create a single D: partition out of the unallocated space on both drives so the server sees a single C: for programs and D: for data.  How do I do this?
Capture1.PNG
Capture2.PNG
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rindiCommented:
That is Windows built-in RAID 1. You need to create a new partition on one of your disks, format it, then you can create a new mirror using the unpartitioned space of the other disk.
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andyalderCommented:
You have to create a new NTFS partition on the unallocated area of disk 0, then right click on it and "add mirror" should be available.

Oops, Rindi just said that, ignore me ;)
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PAMurilloAuthor Commented:
Thanks andyalder.  Ill give that a shot in a few hours and update (I think the Add Mirror was grayed out)
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PAMurilloAuthor Commented:
Thanks rindi, Ill give that a shot too and update.
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PAMurilloAuthor Commented:
Great guys! Worked like a charm
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