Syntax: WBADMIN START BACKUP -backupTarget:{ | } -include: -allCritical -user: -password: -noInheritAcl -noVerify -vssFull ...

Syntax: WBADMIN START BACKUP 
    [-backupTarget:{ | }] 
    [-include:]
    [-allCritical]
    [-user:]
    [-password:]
    [-noInheritAcl]
    [-noVerify]
    [-vssFull | -vssCopy]
    [-quiet]

Description:  Creates a backup using specified parameters. If no parameters 
are specified and you have created a scheduled daily backup, this command 
creates the backup by using the settings for the scheduled backup. 

Parameters:
-backupTarget  Specifies the storage location for this backup. Requires a 
                hard disk drive letter (f:), a volume GUID-based path in the 
                format of \\?\Volume{GUID}, or a Universal Naming Convention 
                (UNC) path to a remote shared folder 
                (\\\\). 
                By default, the backup will be saved at: \\
                \\WindowsImageBackup\\.
                Important: If you save a backup to a remote shared folder, 
                that backup will be overwritten if you use the same folder to
                back up the same computer again. In addition, if the backup 
                operation fails, you may finish with no backup because the 
                older backup will be overwritten, but the newer backup will 
                not be usable. 
                You can avoid this by creating subfolders in the remote shared
                folder to organize your backups. If you do this, the 
                subfolders will need twice the space of the parent folder.

-include       Specifies the comma-delimited list of items to include in the 
                backup. You can include multiple volumes. Volume paths can be 
                specified using volume drive letters, volume mount points, or 
                GUID-based volume names. If you use a GUID-based volume 
                name, it should be terminated with a backslash (\). You can 
                use the wildcard character (*) in the file name when 
                specifying a path to a file. Should be used only when the 
                -backupTarget parameter is used.

-allCritical   Creates a backup that includes all critical volumes (critical 
                volumes contain the operating system files and components) in 
                addition to any other items that you specified with the 
                -include parameter. This parameter is useful if you are 
                creating a backup for bare metal recovery or system state 
                recovery. Should be used only when the -backupTarget 
                parameter is used.

-user          If the backup is saved to a remote shared folder, specifies 
                the user name with write permission to the folder.

-password      Specifies the password for the user name that is provided by 
                the parameter -user.

-noInheritAcl  Applies the access control list (ACL) permissions that 
                correspond to the credentials specified by -user and 
                -password to \\\\WindowsImageBackup
                \\ (the folder that contains the backup). 
                To access the backup later, you must use these credentials or 
                be a member of the Administrators group or the Backup 
                Operators group on the computer with the shared folder. 
                If -noInheritAcl is not used, the ACL permissions from the 
                remote shared folder are applied to the 
                 folder by default so that anyone with                      
                access to the remote shared folder can access the backup.

-noVerify      Specifies that backups written to removable media (such as a 
                DVD) are not verified for errors. If you do not use this 
                parameter, backups saved to removable media are verified for 
                errors.

-vssFull       Performs a full backup using the Volume Shadow Copy Service 
                (VSS). Each file's history is updated to reflect that it was 
                backed up. If this parameter is not used WBADMIN START BACKUP
                makes a copy backup, but the history of files being backed up
                is not updated.
                Caution: Do not use this parameter if you are using a product 
                other than Windows Server Backup to back up applications that 
                are on the volumes included in the current backup. Doing so 
                can potentially break the incremental, differential, or other 
                type of backups that the other backup product is creating.

-vssCopy       Performs a copy backup using VSS. The history of the files 
                being backed up is not updated. This is the default value.

-quiet         Runs the command with no prompts to the user.

Example: WBADMIN START BACKUP -backupTarget:f: -include:e:,d:\mountpoint,
\\?\Volume{cc566d14-44a0-11d9-9d93-806e6f6e6963}\