I have issues installing Windows Server 2008 64-bit Enterprise Edition on the X7DAL-E configured w/Adaptec raid. Looking at the product driver-page, I am not seeing RAID drivers for Server 2008. Is this something that is available?
There is no raid driver need while you installed Windows Server 2008 64-bit Enterprise Edition since the raid driver is already embedded in the OS. If you still have a problem, you might try the attached driver in this link below to see it helps.
https://www.supermicro.com/wdl/driver/SATA/Adaptec_ESB2/Windows/