Gizmodo has an interesting post that mentions a couple points often overlooked about Windows Home Server.
Windows Home Server only backs up one instance of a file that appears across your system. So think of it this way, if you are using WHS to backup your 5 Dell XPS laptops (lucky you), each freshly formatted with Vista and holding all of your MP3s, the amount of storage required to back them up isn’t going to be much bigger than the amount of space required to backup one of them. Read more about the disk system here (pdf).
Another cool feature with Home Server is sharing the printers across your home network. Seems like I could run a small Kinko’s out of my house and I was always at the wrong computer to print what I needed; text at the photo printer, pictures at the laser printer. Now all my printers are shared across the network – even available to visitors.
Windows Home Server, WHS, Microsoft, Article