To add a Tape Coordinator to an existing Tape Coordinator machine, perform the following steps on the Tape Coordinator machine:
1. Install the drive on the machine according to the manufacturer's instructions.
2. Verify that you are included in the appropriate administrative lists. If necessary, issue the bos lsadmin command to check.
3. Verify that you have the w (write) permission on the dcelocal/var/dfs/backup/TapeConfig file.
4. Choose the TCID for the drive. Enter the bak lshosts command to check previously assigned TCIDs:
$ bak lshosts
5. Using a text editor, add a line for the new tape drive to the dcelocal/var/dfs/backup/TapeConfig file. Use a single line in the file for each tape drive, recording the following information:
· The tape size of the tapes to be used in the drive. The Tape Coordinator uses this capacity as the size of all tapes used in the drive. It is recommended that you use a number 10 to 15% lower than the actual tape capacity to allow for tape variations. The following abbreviations can be used for the tape size unit of measurement (the default is kilobytes); do not leave a space between the number and the letter.
- Kilobytes: k or K (for example, 2k or 2K)
- Megabytes: m or M (for example, 2m or 2M)
- Gigabytes: g or G (for example, 2g or 2G)
· The EOF mark size for the type of tape to be used in the drive. The Backup System appends an EOF mark after each fileset dumped to tape. The size of this mark can affect the amount of space available for backup data. The EOF mark size can vary from 2 kilobytes to more than 2 megabytes, depending on the type of tape drive used. It is recommended that you increase the actual file mark size by 10 to 15% to allow for tape variations.
If you do not specify a unit of measurement, the default used for the EOF size is bytes (not kilobytes, as for tape capacity). To indicate other units, use the same abbreviations as for tape capacity.
· The device name of the tape drive. The format of this name varies with each operating system.
· The TCID for the Tape Coordinator associated with the drive. Legal values are integers from 0 to 1023.
If you do not know the tape size or EOF mark size for the tape drive, determine them by using the fms command described in Determining Tape Size and End-of-File Mark Size .
6. Enter the bak addhost command to define an entry in the Backup Database for the Tape Coordinator:
$ bak addhost -tapehost machine [-tcid tc_number]