MOSS 2007 Backup & Restoration

Back up a farm by using SQL Server tools (Office SharePoint Server 2007)

http://technet.microsoft.com/en-us/library/cc263069(v=office.12).aspx

Restore a farm by using SQL Server tools (Office SharePoint Server 2007)
http://technet.microsoft.com/en-us/library/cc262197(v=office.12).aspx