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  1. Home
  2. Veritas NetBackup™ Administrator's Guide, Volume I
  3. Section V. Configuring backups
  4. Managing backup images
  5. Duplicating backup images
  6. Multiplexed duplication considerations
Veritas NetBackup™ Administrator's Guide, Volume I

Multiplexed duplication considerations

Consider the following items about multiplexed duplication.

Table: Multiplexed duplication considerations

Consideration

Description

Multiplex settings are ignored

When multiplexed backups are duplicated, the multiplex settings of the destination storage unit and the original schedule are ignored. However, if multiple multiplexed groups are duplicated, the grouping within each multiplexed group is maintained. This means that the duplicated groups have a multiplexing factor that is no greater than the factor that was used during the original backup.

Backups in a multiplexed group are duplicated and duplicated group is identical

When backups in a multiplexed group are duplicated to a storage unit, the duplicated group is identical as well. However, the storage unit must have the same characteristics as the unit where the backup was originally performed. The following items are exceptions:

  • If EOM (end of media) is encountered on either the source or the destination media.

  • If any of the fragments are zero length in the source backups, the fragments are removed during duplication. A fragment of zero length occurs if many multiplexed backups start at the same time.

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