tl8d

tl8d, tl8cd — Tape library 8MM (TL8) daemon (process) and control daemon (process)

SYNOPSIS

<volmgr_dir_path>tl8d [-v]

<volmgr_dir_path>tl8cd [-v] [-t] [-n]

On Windows systems, <volmgr_dir_path> is <install_path>\Volmgr\bin\

DESCRIPTION

tl8d and tl8cd interface with Media Manager to mount and unmount volumes in a Tape Library 8MM robot.

ltid is the Media Manager device daemon on UNIX and Linux systems and the NetBackup Device Manager service on Windows systems. t18d runs on each host with a drive connection and sends mount and unmount requests to the control daemon (tl8cd). tl8cd communicates with the robotics through a SCSI interface.

On Windows systems, tl8d and tl8cd are started when the NetBackup Device Manager service is started. They are stopped when this service is stopped. The control process, tl8cd, is on the host that has the robotic control. tl8d starts it automatically on that host (see EXAMPLES). tl8cd stops when you stop the NetBackup Device Manager service.

Before you access any volumes through the NetBackup Device Manager service (Windows systems), ltid, tl8d, and tl8cd, define the following information: the media ID and slot number for volumes in a robot in the EMM 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.

If the vm.conf configuration option PREVENT_MEDIA_REMOVAL is enabled when tl8cd is active, tl8cd disables access to the volumes and the media access port. It disables access by issuing a command to the TL8 robot. If it is necessary to open the door of the cabinet, you must terminate tl8cd first. By default, access to the library is allowed.

The drives are logically numbered 1 through n, where n is the number of drives in the robotic library. Use one or more of the following to determine the correct robot drive numbers:

  • The Device Configuration Wizard (if the robotic library and drives support serialization).

  • The robotic library vendor's documentation on how to index the drive.

  • The robotic test utility, or experiment by mounting media and then watch the operator display.

On Windows systems, the Internet service port number for tl8cd must be in %SystemRoot%\system32\drivers\etc\services. To override the services file, create the install_path\Volmgr\database\ports\tl8cd file with a single line that contains the service port number for tl8cd.

The default service port number is 13705.

The following items apply only to NetBackup Enterprise Server:

  • Tape library 8MM robotic control software permits drives in the same robot to be configured on different hosts. tl8cd may be running on a different host than tl8d, depending on where the SCSI connection resides (see EXAMPLES). When the connection is established (the path for robotics can be opened), tl8d puts the TL8 robot in the UP state. It then can mount and unmount volumes. If the robotics are inaccessible, tl8d changes the robot to the DOWN state. In this state, tl8d is still running and returns the robot to the UP state if tl8cd is able to make a connection.

  • If drives are on different NetBackup hosts, enter the robotic information in the Media Manager configuration on all machines. The robot number must be the same on all machines.

You must have administrator privileges to run this command.

ERRORS

Media Manager logs any tape library 8MM and robotic errors to syslogd. Log entries are also made when the state changes between UP and DOWN.

Windows systems:

Media Manager logs any tape library 8MM and robotic errors to the Windows application event log. Log entries are also made when the state changes between UP and DOWN.

SEE ALSO

tpclean, tpconfig