I am trying to create a tiered virtual disk with Windows Server 2012 R2. I can successfully create pools; however the option to "Create storage tiers on this virtual disk" requires at least one SSD and one HDD. My WD-red 3TB drives are reported as media type "Unknown"; neither SSD or HDD. Seagate drives added to the pool correctly report themselves as media type HDD, but so far all of the WD drives report media type as Unknown.
Am I doing something wrong? Is this an issue with Server 2012 R2 or Western Digital? Is there a way to force the media type to HDD or tell the virtual disk drive to treat the drive as type HDD so the tiered SSD can properly cache it?