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Managing Media
Copying Media
Chapter 4144
NOTE When copying media, it is possible that the target medium reaches the
end of the tape before the source medium. This may happen if the source
medium was written in streaming mode and you make a copy on a busy
system or through a loaded network, which can create blank space where
the tape has stopped and started again. You can prevent this by enabling
tape padding when you format media. See “Formatting Media” on
page 108.
Moving Copies Typically, you want to move the copies of the media to a safe place. See
“Vaulting Media” on page 140 and “Ejecting a Medium from a Device” on
page 137 for more information.
Exporting Copies Exporting a medium removes all information regarding this medium
from the IDB. If you export the original medium, but one or more copies
of the medium exist, one of the copies becomes the original.
If you try to import the removed copy, but the original media are not in
the IDB, you have to import these media using the force option. See
“Importing Media” on page 113 for instructions.
Restoring from a
Copy
When you restore data, Data Protector prefers restoring from the
original media. However, if the original media are not available, but a
copy is available, the copy will be used for the restore.
If neither the original nor a copy is available in the device during restore,
Data Protector issues a mount request, displaying both the original and
the copy as the media required for restore. You can use any one of these.
If you perform a restore using a standalone device, you can choose to
restore from the copy rather than from the original. To do this, insert the
copy in the device that will be used for the restore, or select the device
containing the copy. However, if you perform a restore using a library
device and the original is in the library, Data Protector will use it for the
restore.
For detailed instructions on how to restore data from the media archive,
see “Vaulting Media” on page 140.