Having trouble with raid one

Recently purchased two terabyte drives, and I'm having issues setting them up in a raid one configuration.

I've got both drives installed and showing up correctly in the file viewer, but aren't copying files over correctly.

Any ideas?
 
Are you sure the drive are functioning property. You can format the drive in correct format.
 
ALL Raid-x devices need to be formatted by the RAID controller - - in such a configuration the drives are NOT NTFS!
 
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