Introduction to the bak command suite
Options
The following options are used with many bak commands; they are also listed with the commands that use them:
-server machine
Specifies the File Server machine to use with the command. You can use any of the following to specify the File Server machine:
· The machine's DCE pathname (for example, /.../abc.com/hosts/fs1)
· The machine's host name (for example, fs1.abc.com or fs1)
· The machine's IP address (for example, 11.22.33.44)
-tapehost machine
Specifies the machine for which a Tape Coordinator is being added. You can use the machine's DCE pathname, its host name, or its IP address.
-tcid tc_number
Specifies the Tape Coordinator ID (TCID) of the Tape Coordinator being used to execute the command. Legal values for this argument are the integers
0 (zero) to 1023. Because the default for the TCID is 0 (zero), the drive used most often should be assigned a TCID of 0 (zero).
-help
Prints the online help for the command. All other valid options specified with this option are ignored. For complete details about receiving help, see the
dfs_intro(8dfs) reference page.
Description
Commands in the bak command suite are issued by system administrators to work with the DFS Backup System. The commands copy user and system files to backup
tapes and restore information from the tapes, if necessary. All bak commands are restricted to administrative users only.
The Backup System relies primarily on the following two types of machines and the information and services they provide:
· Backup Database machines, which are server machines that house the DFS Backup Database. A cell must have at least one Backup Database machine to use the Backup System; it is recommended that a cell have at least three Backup Database machines. The Backup Database stores two types of records: dump set records, which list the fileset families and tapes in the dump sets; and administrative records, which list fileset families and their entries, as well as dump levels and tape hosts.
· Tape Coordinator machines, which are client or server machines with attached tape drives. A Tape Coordinator machine runs an instance of the butc process, which is the Backup Tape Coordinator process, for each drive. A Tape Coordinator process controls the behavior of its associated drive and accepts service requests from the Backup System.
A Tape Coordinator ID (TCID) acts as an identifier for the Tape Coordinator. The TCID for each Tape Coordinator is assigned in the TapeConfig file on the machine that houses the tape drive and in the Backup Database. Each TCID is unique to the cell in which the Tape Coordinator is used. With bak commands, the TCID specifies the Tape Coordinator to use with the command.
More:
Command and Monitoring Windows