Use the Duplicate Media using BRM (DUPMEDBRM) command to copy the
contents of a volume or set of volumes. You can copy a single volume,
a list of volumes, or a media set.
Note:
The OBJDTL parameter of the DUPMEDBRM command is ignored.
Duplicated media will always result in duplicated object detail, if
object detail information is available for the duplicated items on
the input media. The object detail of the duplicated media is not
actually copied, but is "keyed" to the original saved object detail
to minimize the storage BRMS requires to maintain the duplicated detail
information.
Before you use the DUPMEDBRM command, however, keep the following
information in mind:
You must have two devices to use this command, unless duplicating
from a virtual device. If the devices are shared non-MLB devices,
BRMS varies the devices on for you. If your device is not a shared
device, you must vary it on.
The media or media set that you are copying must be members of
the media inventory.
When you duplicate volumes using the DUPMEDBRM command, BRMS does
not automatically save the media information updates associated with
the duplicated volumes. Follow the steps outlined in Saving Media Information for Duplicate Volumes after duplicating volumes to assure the media
information updates are saved and the recovery reports reflect the
most current information.
When supplying volume serial numbers to the DUPMEDBRM commands
as values for the To volume identifier field,
you must provide more expired volume serial numbers to receive output
copies. This is in case of any length variations between physical
volumes.
You cannot duplicate saved items saved
to TSM servers using the DUPMEDBRM command. Duplication of TSM server
media is managed by the TSM administrator using TSM operations.
When duplicating virtual media to physical media, BRMS
will then treat the physical media as the original save. This is only
on the first duplication to physical media.
If a volume is marked for duplication, BRMS will not
move the volume when movement is run.
If a volume that is past expiration but still marked
for duplication hasn’t been duplicated, BRMS will not expire
the volume.
Notes:
The devices do not have to support the same media classes. You
specify the media policy in the DUPMEDBRM command.
To use DUPMEDBRM to copy a file group, the output media assumes
the group number of the input media. An exception to this is a SETMEDBRM
command that overrides the value for file group and type for the output
volumes.
The easiest approach to duplicate volumes of a parallel set is
to mark the volumes for duplication then use VOL(*SEARCH) on the DUPMEDBRM
command.