It varies on the Wintel platform depending upon the tools that are used. You might want to look at the various ISV sites, such as IBM for TSM on how they go about it. It is quite different to the mainframe arena (where I come from) where you'll probably only use 1 of 3 major tools to perform backups such as DFSMSsms, FDR or the CA one but you'll also have other tools such as HSM in place. A good book I found was
Amazon.com: Windows 2000 and Mainframe Integration (9781578702008): William H. Zack: Books