HP 3000 Manuals

Verifying Your Backup Media [ Performing System Management Tasks ] MPE/iX 5.0 Documentation


Performing System Management Tasks

Verifying Your Backup Media 

Use the VSTORE command to verify that your backup media is good and can
be used in a recovery.  This step can prevent the possible loss of data
resulting from attempting to restore files on a tape that is damaged or
defective.

The parameters for the VSTORE command are defined below:

--------------------------------------------------------------------------------------------
|                     |                                                                    |
|      Parameter      |                             Definition                             |
|                     |                                                                    |
--------------------------------------------------------------------------------------------
|                     |                                                                    |
| ONERR=              | Specifies what to do if VSTORE encounters an error.  To stop       |
|                     | processing if it encounters an error, use ONERR=SKIP. To continue, |
|                     | use ONERR=SKIP.                                                    |
|                     |                                                                    |
--------------------------------------------------------------------------------------------
|                     |                                                                    |
| SHOW                | Specifies where to display the results of the VSTORE command.  To  |
|                     | display them on the console, use SHOW. To print the results, use   |
|                     | SHOW=OFFLINE.                                                      |
|                     |                                                                    |
--------------------------------------------------------------------------------------------
|                     |                                                                    |
| LOCAL               | Use to verify files that were written to tape from a group and     |
|                     | account other than the logon account of the verifier.              |
|                     |                                                                    |
--------------------------------------------------------------------------------------------
|                     |                                                                    |
| DIRECTORY           | Use to verify the file system directory.                           |
|                     |                                                                    |
--------------------------------------------------------------------------------------------

To verify your tapes 

To verify your backup tape set, do the following:

   1.  Create a backreference by entering:

            FILE TAPEFILE;DEV=TAPE 

   2.  Enter the VSTORE command to verify the copies of the files in the
       specified directory.  For example, to select all files in all
       groups in all accounts and display the results on the console,
       enter:

            VSTORE *TAPEFILE;@.@.@;ONERR=QUIT;SHOW;LOCAL;DIRECTORY 

To use the file equation issued by the system for your logon user name,
use a semicolon as a place holder for the tape file reference.  For
example:

     VSTORE ;@.@.@;ONERR=QUIT;SHOW;LOCAL;DIRECTORY 

To print the results of VSTORE 

To print the results of the VSTORE command, add the parameter
SHOW=OFFLINE. For example, to select all files in all groups in all
accounts and print the results, enter:

     VSTORE ;@.@.@;SHOW=OFFLINE 


NOTE Once you have created your backup tapes and are ready to restore them, you can use the new CHECKSLT command to check the tape and to estimate the amount of contiguous disk space required on LDEV 1 for the restore.


MPE/iX 5.0 Documentation