Backing Up the System

Log on to the MANAGER.SYS account. About fifteen minutes before starting the backup, tell everyone on the system to log off. During a backup, files that are in use will not be stored on the tapes. To make sure that all files are included in the backup, ask the users to log off the system. You can do this either verbally or through the system, using the TELL command.

To keep users from logging back on the system while the file backup is running, reset the job and session limits to 0.

1. Use the HELLO command to log on as MANAGER.SYS.

   : HELLO MANAGER.SYS Return

   The system prompt (:) appears.

2. At the system prompt (:), type the following to get into SYSGEN:

   : SYSGEN Return

   The computer responds by displaying the SYSGEN prompt:

   sysgen>

3. You should have purchased blank DDS cassette tapes. Load one of these read and write blank cassette tapes (slide the cassette tab to the right rear edge so that the recognition hole is closed), into the DDS tape drive. See Title not available. Remember not to use any other cassette labeled for another purpose. Wait until the tape is fully loaded (the cassette light on the DDS drive stops blinking.) Refer to chapter 5 in Getting Started - HP 3000 Series 9X8LX (B3813-90003) if you need a description of the indicator lights for your tape drive.

   Figure 2-3 Using a read and write blank tape

   

   When the tape is loaded, a console message similar to the following is displayed on the screen:

   8:58/15/VOL (Unlabelled) mounted on LDEV#7

4. At the SYSGEN prompt, type the following (if the sysgen> prompt does not appear, press Return to get if):

   sysgen> TAPE STORE=!FSETLIST Return

5. After the tape loading process is complete, a tape request similar to the following appears:

   ?8:58/#S2/45/LDEV# FOR SYSGTAPE ON TAPE (NUM)?

   The message, called a tape request, asks for the LDEV number of the tape drive that you will use. The session number (#S2) is your MANAGER.SYS session number. The process identification number (PIN) (45 in this example) is the number that you will need in step 7 in the tape request to answer this message. (The PIN number always appears after the second slash mark (/).)

6. Reply to the tape request by pressing the Ctrl and A keys simultaneously.

   Ctrl A

   The = prompt appears.

7. Use the REPLY command including the PIN number and the LDEV of the tape drive that are in the tape request message. Separate these two values with a comma. The format of the reply is:

   =REPLY <PIN number>,<LDEV#>

   For the HP 3000 Series 9X8LX, the built-in tape drive is always LDEV 7 for your tape request. In the above example, the PIN number is 45; therefore, you would type the following:

   =REPLY 45,7 Return

   You will notice the tape drive lights flashing (if you would like a description of the light activities, refer to chapter 5, in Getting Started - HP 3000 Series 9X8LX (B3813-90003) and hear noise coming from the drive. This is all part of creating a system recovery tape. The number of files that you currently have on your system determines how long the store process takes.

   	NOTE: That this process of creating a system recovery tape could take from 30 minutes to two hours.

   At the end of this process, the system tells you how many directories and files have been stored onto your cassette tape. When the process is finished, the sysgen> prompt reappears.

8. To return to the system prompt (:) after the tape is created, type:

   sysgen> EXIT Return

   The system prompt (:) should reappear.

9. Remove the tape from the DDS tape drive by pressing the unload button on the front panel. Then move the cassette tab to the read-only mode.

10. Place a new label on the tape. To prevent jamming in the DDS tape drive, remove any old labels before adding new labels, and position the new label evenly on your cassette.

11. Store the system recovery tape with a listing of your backup files.

• If you are not already logged on to the system as MANAGER.SYS, do so now. When you are sure that your console session is the only session on the system, you are ready to begin the backup process.

• Load a non-write-protected cassette (slide the cassette tab to the right rear edge so that the recognition hole is closed), into the DDS tape drive. Do not use any other cassette labeled for another purpose for the backup.

A partial backup involves storing only those files that have been changed or accessed since the last backup. The DATE= option of the STORE command identifies files for partial backups. In the following examples, the account structure is stored to tape using the DIRECTORY parameter.

A full backup involves storing all files on the system, whether they have been used or not. To do this, use the STORE command with wildcards for file, group, and account names.

In the following example, all files on the system are stored, the account structure is stored (DIRECTORY), and a listing is printed on the standard output device ($STDLIST).

To set the job and session limits back to their original settings so that other users can log on, use the LIMIT command.

   LIMIT joblimit,sessionlimit Return

For example, if the job limit was originally set at 10 and the session limit was set at 20, you would type the following:

   LIMIT 10,20 Return

1. Configure the system so that the tape drive replies automatically to the tape request. To do this you must use the utility known as SYSGEN.

   This step should be performed only by a system manager who has been formally trained in using the SYSGEN utility.

   1. Begin the SYSGEN utility by entering SYSGEN at the system prompt:

      :SYSGEN

   2. Open the input/output configurator:

      sysgen> IO

   3. Set the tape drive mode to autoreply:

      io>MDEV 7 MODE=AUTOREPLY

   4. Save the autoreply setting:

      io>HOLD

   5. Exit the input/output configurator:

      io>EXIT

   6. Keep the new configuration with this setting:

      sysgen>KEEP CONFIG

   7. Answer Y or YES to the following prompt:

      keeping to group CONFIG Purge old configuration (yes/no)? YES

   8. Leave the SYSGEN utility:

      sysgen>EXIT

   9. Shut the system down by doing the following:

      Before performing the following step, verify that there are no jobs active on the system and that the console is the only active session. Refer to the "To prepare for the system shutdown" section of this chapter for instructions on performing these tasks.

      • Press Ctrl A.

      • At the = prompt, type SHUTDOWN and press Return. This process could take several minutes. Wait for the SHUTDOWN COMPLETE message to appear on your screen.

   10. Reset the system.

       • Perform either a hard or soft reset.

         Ctrl B CM>RS Return or CM>TC Return

       • Boot from primary path. Interact with IPL.

       • At the ISL> prompt type, START NORECOVERY Return

       • Log on as MANAGER.SYS, and supply passwords.

         If you have followed the procedures in the "To prepare for the system shutdown" section of this chapter, continue by performing the procedures found in the "System Startup" section. Continue from procedure 4, "Starting the system", step 3, "Allow users to log on."

       This configuration is permanently saved on your disk in a group named CONFIG. It lasts longer than your session. Changes to this configuration may occur upon reconfiguring your system.

       	CAUTION: In this case, the tape drive now replies automatically to tape requests; thus, whatever tape is in the drive at the time of the request is written to as a result of any STORE command.

   11. Create a job file so that you can stream the commands for a backup as a job. In this way, you can schedule the backup according to a time parameter, such as AT.

       1. In EDIT/3000 create a file similar to this:

          !JOB BACKJOB,user/password.account/password;INPRI=13 !LIMIT 1,1 !FILE T;DEV=TAPE !FILE SYSLIST;DEV=LP !STORE @.@.@;*T !TELL Backup job has completed. !LIMIT 10,20 !EOJ

          In the JOB command line, substitute in your user and account names, along with their passwords.

       2. Before exiting the editor, save the file as BACKJOB.

   12. Stream BACKJOB with an appropriate time parameter. The example here shows a job that will execute on the day that it is streamed, at 9:00 pm.

       STREAM BACKJOB;AT=21:00

• Was the unload button of the tape drive accidentally pressed during the backup process?

  Start the backup procedure over again from the beginning.