User's Manual

106 Managing media
Note that the factor 2 is used because 2 is the assumed compression ratio of the tape drives. If the
compression ratio is different, the factor must be changed appropriately.
For information on how to extend FSE disk buffer with additional file systems or volumes, see chapter
”Monitoring and maintaining FSE”, section ”Extending storage space of FSE disk buffer” on
page 176.
• The target medium should not contain any valid data or header such as a tar archive label or an
ECMA / ANSI label.
• The target medium should not be initialized.
• The target medium should not belong to any FSE media pool that is already assigned to an FSE
partition.
Normal duplication
When all duplication prerequisites are met, and the original and target media are prepared, you can
make a duplicate of the original medium using the following command:
If you do not want to monitor the medium duplication progress, specify the --no-monitor option as
shown in the command syntax above. Otherwise, the duplication progress will be reported to the standard
output.
Forced duplication
When any of the last three duplication prerequisites is not met and normal duplication fails, you can still
duplicate to the target medium if you use forced duplication functionality. You can perform a forced
medium duplication using the following command:
CAUTION: Since forced duplication overwrites any data that is stored on the target medium, data loss
may occur on the target medium.
Example output for a medium duplication with enabled monitoring, using single tape drive
LTO 2 : 200 GiB * 2 = 400 GiB
LTO 3 : 400 GiB * 2 = 800 GiB
fsemedium --duplicate SourceBarcode TargetBarcode [--no-monitor]
fsemedium --duplicate SourceBarcode TargetBarcode [--no-monitor] --force
fsemedium --duplicate 123123 456456
[11:42:09] Started.
[11:42:09] Requesting resources...
[11:42:09] Resources allocated.
[11:42:09] Medium 123123 is already present in drive drv1.
[11:42:09] Starting Back End Agent.
[11:42:10] Medium 123123: 2 volumes found.
[11:42:10] Medium 123123, volume 1: Reading volume identification...
[11:43:48] Medium 123123, volume 1: Reading data.
[11:43:58] Medium 123123, volume 1: Volume read and written to disk buffer.
[11:44:10] Medium 123123, volume 2: Reading volume identification...
[11:44:48] Medium 123123, volume 2: Reading data.
[11:45:58] Medium 123123, volume 2: Volume read and written to disk buffer.
[11:43:58] Reading finished, releasing resources.