In Windows Server 2012, disk management is arguably defeated by server manager, powershell, and storage spaces. However, not every business (small, medium, or large) is going to make a quick move to Server 2012. What that means is that the IT pro needs to know the basics.
I found this great post at TechNet on implementing disk management. In it the reader will learn disk terms and how to use disk management for creating and managing basic and dynamic disks, software RAID, enabling quotas, and enabling encryption.
Implementing Disk Management