May I know what hard drive(s) you have there? Also, can you please recommend where to get one of this m1015 raid? Very much appreciated. Edit: So I just tried to switch the SATA controller from Raid to ACHI, ran the Windows Server 2012 R2 installation, it won't still recognised more than 2tb. Looks like I need to spend more money and get a proper raid/sata controller that supports WD red 6tb?