Entering content frameProcedure documentation Saving to a Group of Parallel Backup Media Locate the document in its SAP Library structure

Use

To ensure maximum data throughput, the database instance can be backed up to a several different media at the same time. You can set the maximum number of tape devices which can be used at the same time using parameter MAXBACKUPDEVS . The use of up to 32 tape devices allows you to reduce backup times considerably.

Parallel backing up is only possible for Structure linkdata backups.

Prerequisites

There are multiple backup devices available.

You have defined the Structure linkbackup medium to be used for the backup. If you want to perform a backup using an automatic tape loader (Backups to Automatic Tape Loader), or with the help of external backup tools(Backups with External Backup Tools), then you must state this specifically when defining the media.

Note

Under normal circumstances, you should not backup Structure linkdatabase instances if they are in ONLINE mode.
You can also backup database instances in ADMIN mode, but only in exceptional circumstances. However, if you backup in cold mode, you no longer have the choice between backing up for recovery (a complete backup of data without Structure linkcheckpoint) and backing up for migration (a complete backup of data with checkpoint) because there is no real guarantee that the database instance was shutdown in the correct way.

Procedure

  1. Choose Instance ® Backup and the selected backup type:
    ® Complete (complete data backup)
    ® Incremental     (incremental data backup)
    A group of parallel media cannot be used for log backups.

    A list of the media already defined for the selected backup type appears on the screen.
    If no media have been defined yet, you must define them now (    Creating a Group of Parallel Media).
  2. Select the medium to be used for the backup.
  3. Check the details of the medium. Change them if required (Changing Backup Media).
  4. Select BackupSave ® Next Step on the menu bar at the top of the screen.
    For data backups, choose whether the backup is for the purposes of
    Recovery (data backup without checkpoint), that is, to recover the database instance after an error, or
    Migration (data backup with checkpoint), that is, to migrate the database instance.
  5. If the capacity of the group of parallel media is not large enough for the backup, Database Manager GUI asks you to specify and insert a new medium as soon as any of the media has been filled (see Backups to Manually Changed Media).

Once the backup procedure has been successfully completed, you see the message Backup completed.

 

 

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