I am trying to set up software raid on a win2008 R2 server core. I have the disks configured as dynamic. In the server manager gui, i can see the disks, but when i right click, the option to set up "new mirrored volume" is not listed. I tried it with the command line using diskpart, and it gives the error "Virtual Disk Service Error: The size of the extent is less than the minimum." The drive are a new pair of 1Tb disks.

Is this not supported in server core, or am i missing something else?

Thank you