Hi there, The reason that Windows installation doesnot see the drives, is because the drivers of PERC is not loaded. Here's what I can suggest: 1) You saw foreign configration in PD MGMT. (Something I need to know is, you are about to install a new windows, right?) - If yes, clear foreign configuration. Reference page 44: ftp://ftp.dell.com/Manuals/Common/poweredge-rc-h310_User%27s%20Guide_en-us.pdf 2) After deleting, go ahead and create a RAID. Reference page 41, same link. 3) You can proceed to install windows using a few methods. I would recommend Page 8 "Instaling Microsoft Windows Server 2008 R2 Using USC" ftp://ftp.dell.com/Manuals/all-products/esuprt_electronics/esuprt_software/esuprt_operating_system/ms-win-srvr-2008-r2_Reference%20Guide2_en-us.pdf Let me know the outcome.   
Dear Sir, I just had this T320 and my problem now is i dont have any cd's, drives, manuals, etc. coz they shipped this from china. I tried to follow all instructions but failed to find the 2 500HDD installed (Dell Constellation). Please help me to run the system.  I tried ATA AHCI RAID and so on but failed to detect the hard drive. Thank you for all your support and regards to all. Mysh
Can't Detect Hard Disk