HP 3000 Manuals HP 3000 Manuals
Interpreting Status Signal Conditions When operating your tape drive, be aware of the indicator lights displaying conditions to notify you of the status. If you have a read-only tape If the cassette is a read-only tape, the cassette light shows yellow during normal operations. If you see a caution signal The caution signal is indicated by the cassette light alternating between green (for 4.5 seconds) and off (for 0.5 seconds). For normal operation, it typically is a steady green. If this caution condition occurs, it means that the tape drive is having to correct an excessive number of errors when using the cassette. This can mean that the tape heads need cleaning or that the tape is nearing the end of its useful life. When you see a caution signal, first clean the tape heads using the tape cleaning procedures described later in this section. If the signal occurs again, you should copy the data from the tape onto a new tape using this procedure sequence: 1. Copy the data from the tape onto disk. 2. Copy the data from the disk onto a new tape. 3. Discard the old tape. If you need to copy data from the tape onto disk.
CAUTION The following procedure can cause good data files to be written over by corrupted files. Before proceeding on to the following task, be sure that you fully understand the scope of the commands being used.
Use the RESTORE command and its options to copy files from your cassette tape back onto the system. To restore all the files from the tape to the system disk, use RESTORE and the wildcard @, for the file, group, and account names. After you copy the files, use the SHOW option to list the files to verify that they are the files that you wanted to copy onto the system disk. To perform a restore of your files, follow these steps. (If you are already in MANAGER.SYS, omit step 1.) 1. Use the HELLO command to log on as MANAGER.SYS. : HELLO MANAGER.SYS Return 2. Load the cassette tape into the tape drive from which you wish to copy files to the system disk. 3. For the HP 3000 Series 9X7LX with the built-in tape drive, type this file equation at the system prompt: : FILE T;DEV=TAPE Return : RESTORE *T;@.@.@;SHOW Return For additional information about restoring files, refer to Using Your System. If you need to copy from the system disk onto a new tape. Use the STORE command and its options to copy your files from the system disk onto a cassette tape. Begin by using the FILE command to create a file equation to specify the tape device that you wish to copy to. For the HP 3000 9X7LX with the built in tape drive, use the FILE T;DEV=TAPE file equation. In the command line for STORE, use the SHOW option to list the files to verify that they are the files that you wanted to copy onto tape. You should still be in the MANAGER.SYS account when you are copying from the system onto the cassette tape. Begin by loading your read-and-write tape into the tape drive, and then proceed with one of these procedures: * To copy more than one file to tape, type the following at the system prompt: : FILE TAPE1;DEV=TAPE Return : STORE filename, filename, filename;*TAPE1;SHOW Return * To copy all files in a group to tape, type the following at the system prompt: : FILE TAPE1;DEV=TAPE Return : STORE @.groupname;*TAPE1;SHOW Return Additional information about managing files is provided in Using Your System. If the humidity is high If the humidity rises too high, both front panel indicators show a steady yellow. The tape drive will not perform any operations requiring movements of the tape until the humidity has dropped to within specification again. Refer to "Handling and Storing Cassettes" in this chapter for information on how to handle your cassette tapes in these conditions. If you have a fault warning If a fault is diagnosed during the self-test performed when the system is switched on, the result is indicated by the cassette light pulsing in groups of one, two, or three pulses, while the drive light shows a steady yellow. If this happens, make a note of the pattern and, call your Hewlett-Packard support representative.