Before performing a backup or restore operation, you must install at least one tape drive on a Tape Coordinator machine and define its corresponding Tape Coordinator in both the dcelocal/var/dfs/backup/TapeConfig file and the Backup Database. (See Configuring a Tape Coordinator Machine for a description of these and other configuration operations that must be performed.) This section explains how to start a Tape Coordinator. You must have a Tape Coordinator running any time you access a tape drive for use with the Backup System.
1. Make certain that you have the w (write) and x (execute) permissions on the dcelocal/var/dfs/backup directory, which is the directory in which the Tape Coordinator creates its TL (log) and TE (error) files.
2. Start a new terminal session on the Tape Coordinator machine to use as the monitoring window for the Tape Coordinator. It must remain open while the Tape Coordinator runs.
3. In the newly opened window, issue the butc command to start the Tape Coordinator. The binary file for the butc program resides in the dceshared/bin directory.
$ butc [-tcid tc_number] [-debuglevel trace_level]
The -debuglevel trace_level option specifies the type of messages to be displayed. There are two valid arguments:
1 Indicates that the Tape Coordinator is to report on its activities as it restores filesets, in addition to prompting for new tapes as necessary.
0 Indicates that the Tape Coordinator is only to prompt for new tapes; it also displays some output as necessary for operations that it executes. This is the default.
Note: If you are using an automated backup device, such as a stacker or jukebox, you can create a user-defined configuration file to control that device. This file is read by the butc command and is used to configure a Tape Coordinator. (See Creating a User-Defined Configuration File for more information.)