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have 900 GB of data to back up. The data is divided among backup specifications
in the following way:
• BackupSpec1 (Drive 1) - 300 GB
• BackupSpec2 (Drive 2) - 300 GB
• BackupSpec3 (Drive 3) - 150 GB
• BackupSpec4 (Drive 4) - 150 GB
BackupSpec1 and BackupSpec2 require 2 media each and the backup takes
approximately 4 hours. BackupSpec3 and BackupSpec4 require 1 medium each
and the backup takes approximately 2 hours.
Configuring automated media copying
Automated media copying of each backup starts after the backup is completed. You
have 6 media to copy, and you can use all the drives in the library for the operation,
as soon as the drives are available.
You can use post-backup media copying to copy the media used with BackupSpec1
and BackupSpec2, since two drives (Drive 5 and Drive 6) are free and therefore you
do not need to worry about availability of the devices.
You configure post-backup media copying for BackupSpec1 and select Drive 1 as
the source device and Drive 6 as the target device. You set the same data protection
as original and specify the location of the media (for example, Shelf 1).
You also configure post-backup media copying for BackupSpec2 and select Drive 2
as the source device and Drive 5 as the target device. You set the same data
protection as original and specify the location of the media.
You use scheduled media copying to copy media used in BackupSpec3 and
BackupSpec4, because you will be using Drive 3 and Drive 4 for the copy operation,
and you have to wait until both backups finish. Note that if the devices are not
available at the time the media copying is scheduled, the operation will fail. For this
reason, it is recommended to add some time to the estimated backup time when
scheduling an automated media copy operation that will use the same devices.
You schedule the media copy operation an hour after the backup is estimated to
finish, select both BackupSpec3 and BackupSpec4 to be copied, and select Drive 3
as the source device and Drive 4 as the target device. You set the same data
protection as original and specify the location of the media.
For a graphic representation of the Incr1 backup and automated media copying,
see Figure 101 on page 335.
Further information334