A commonly asked question is: Should I move all my files from my fileservers to SharePoint? As always the answer depends… Bob Mixon and Joel Olesson has a couple of interesting posts on the subject, have a look at them before you decide what’s best for your organization.
Joel Olesson:
http://blogs.msdn.com/sharepoint/archive/2007/01/02/is-the-file-server-dead.aspx