How to take Shared Services backup using STSADM command ?

Step 1

Run the below command

C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\BIN>stsadm -o backup -showtree

    Farm\
        [SharePoint_Config]\
        Windows SharePoint Services Web Application\
            cab case 17891\
                sharepoint_admin\
            murthy's SharePoint - 11816\
                WSS_Content_Murthy\
            MYSITE- 17665\
                WSS_Content_mysite\
            second MYSITE- 25772\
                WSS_Content_secondMYSITE\
            SharePoint - 12666\
                WSS_Content_recordcenter\
            SharePoint - 80\
                WSS_Content_80\
            vijaysi's case- 26480\
                WSS_Content_vijaysi\
        [WSS_Administration]\
            [Web Application]\
                SharePoint_AdminContent_227a83af-feb9-4de9-9f40-4312912cfc7a\
        SharedServices1\
            [sspadmin- 22667]\
                WSS_Content_sspadmin\
            [SharedServices1_DB]\
            [UserProfileApplication]\
            [SessionStateSharedApplication]\
            [Shared Search Index]\
                [SharedServices1_Search_DB]\
        SharedServices2\
            [second ssp admin site  - 20417]\
                WSS_Content_secondSSPadmin\
            [SharedServices2_DB]\
            [UserProfileApplication]\
            [SessionStateSharedApplication]\
            [Shared Search Index]\
                [SharedServices2_Search_DB]\
        Global Search Settings\
        SSO\

        [ ] - item cannot be selected.
* - not selected to be backed up.

To start the backup or restore process, run the command again omitting the -show
tree option. 

Step 2

Run the command using -item switch to enter the Top level to backup in our case we are taking a backup of SharedServices1

C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\BIN>stsadm -o backup -directory c:\sspbackup.bak -backupmethod full -item SharedServices1

Verbose: The backup/restore process included the following objects:
    *Farm\
        *[SharePoint_Config]\
        *Windows SharePoint Services Web Application\
            *cab case 17891\
                *sharepoint_admin\
                  *murthy's SharePoint - 11816\
                *WSS_Content_Murthy\
            *MYSITE- 17665\
                *WSS_Content_mysite\
            *second MYSITE- 25772\
                *WSS_Content_secondMYSITE\
            *SharePoint - 12666\
                *WSS_Content_recordcenter\
            *SharePoint - 80\
                *WSS_Content_80\
            *vijaysi's case- 26480\
                *WSS_Content_vijaysi\
        *[WSS_Administration]\
            *[Web Application]\
                *SharePoint_AdminContent_227a83af-feb9-4de9-9f40-4312912cfc7a\
        SharedServices1\
            [sspadmin- 22667]\
                WSS_Content_sspadmin\
            [SharedServices1_DB]\
            [UserProfileApplication]\
            [SessionStateSharedApplication]\
            [Shared Search Index]\
                [SharedServices1_Search_DB]\
        *SharedServices2\
            *[second ssp admin site  - 20417]\
                *WSS_Content_secondSSPadmin\
            *[SharedServices2_DB]\
            *[UserProfileApplication]\
            *[SessionStateSharedApplication]\
            *[Shared Search Index]\
                *[SharedServices2_Search_DB]\
        *Global Search Settings\
        *SSO\

Completed with 0 warnings.
Completed with 0 errors.
Backup completed successfully.
-------------------------------------------------
Operation completed successfully.

      [ ] - item cannot be selected.
* - not selected to be backed up.