Back up  and restore creating  using Power shell script


http://secretsofsharepoint.com/cs/blogs/tips/archive/2010/09/17/importing-amp-exporting-sites-in-sharepoint-2010-using-powershell.aspx


http://blogs.msdn.com/b/russmax/archive/2009/10/21/sharepoint-2010-granular-backup-restore-part-1.aspx