SharePoint:Export and Importing of SharePoint Site

To take backup of particular sub site and to make it as sub site to another site collection:

Steps:

1)      First log in to WFE as admin rights

2)      export needed site into .cab file
stsadm –o export –url “http://siteA/sub%20site1” –filename test.cab –versions 4

3)      Do an import to a required location
stsadm –o import –url “http://siteB/sub%20site1” –filename test.cab