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tl4d interfaces with Media Manager to mount and unmount tapes in a tape library 4MM (TL4) robot.
ltid is the Media Manager device daemon on UNIX and Linux systems and the NetBackup Device Manager service on Windows systems. ltid starts tl4d if the Media and Device Management of the Administration Console shows drives in the robot. Stopping ltid stops tl4d.
tl4d communicates with the robotics through a SCSI interface. When the connection is established (the path for robotics can be opened), tl4d puts the TL4 robot in the UP state. It then can mount and unmount tapes. If the robotics are inaccessible, tl4d changes the robot to the DOWN state. In this state, tl4d is still running and returns the robot to the UP state if it is able to make a connection.
Before you access any tapes, must define the following information: the media ID and slot number information for 4-mm tapes in a robot in the Enterprise Media Manager Database.
If a cleaning volume is used, it must be defined in the volume configuration. See tpclean for information on setting the frequency to clean the drive automatically.
On Windows systems, the
Internet service port number for tl4d
must be in %SystemRoot%\system32\drivers\etc\services. To
override the services file, create the file install_path\Volmgr\database\ports\tl4d
with a single line that contains the service port number for
tl4d.
The default service port number is 13713.
You must have administrator privileges to execute this command.
tl4d returns an error message if a copy of tl4d is in operation.
Media Manager logs any tape library 4MM and robotic errors to syslogd. Log entries are also made when the state changes between UP and DOWN.
Media Manager logs any tape library 4MM and robotic errors to the Windows application event log. Log entries are also made when the state changes between UP and DOWN.