From Secrets of SharePoint - Tip of the Day
In SharePoint 2010 you can take a backup of a site collection using the Backup-SPSite cmdlet:
Backup-SPSite http://SP –Path C:\Backup\siteCollection.bak
Restoring a site collection in SharePoint 2010 is just as simple:
Restore-SPSite http://SP –Path C:\Backup\siteCollection.bak








