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Task Reference: HP 3000 Series 9X8LX Computer Systems > Chapter 1 Learning to Use MPE/iX CommandsCopying Files To and From Tape |
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The most important part of your computer system is the files that you and other users create. Normally, original files remain safely stored on your computer's disk. Because they represent months of work, you should also keep a full set of duplicates. Typically, when you need to store files, the following things happen:
The STORE command and, optionally, the FILE command are used to store a file or set of files. A FILE command assigns a file name to a backup device. A STORE command names the files to store and the options to use. With STORE command options for naming files, you can name a single file, several files, or all of the files on the system. The group of files to store is called a file set. In addition to naming many kinds of file sets, you can name file subsets to be excluded from the store process. The user procedures established by system management for copying files to and from tape may vary from facility to facility. The user procedures described in this section assume that you are responsible for entering the equation to define the device and the command to copy your files. You will also load and unload tapes from the tape drive. In this section, you will practice copying files to and from tape. To practice copying files to tape, use the file that you created earlier in this section (MYJOB1NM). To copy a file to tape:
The above command tells the system to store the file MYJOB1NM in the PUB group, using tape drive T. Use the wildcard character (@) to copy several files to tape. The (@) represents "all members of the set." This character tells the system to include everything in that particular group or account. For example:
The above command tells the system to copy everything in the PRACTICE account. After you enter a STORE command, STORE issues a message similar to the following on the console:
STORE sends you messages when you need to insert a new tape on a backup device. Use the PROGRESS parameter in your STORE command to display progress messages at regular intervals. To request progress messages every 5 minutes, enter:
The system displays progress messages every 5 minutes.
You see similar messages at regular intervals, for example:
If you use the PROGRESS parameter alone, without specifying an interval, STORE displays progress messages every minute. You copy a file from tape by transferring it from a store tape to a disk. You might need to copy a file from tape if you accidentally delete it. To copy a file from tape:
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