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4.1.3.7
Tape support
These options are effective when the backup destination is a managed vault located on a tape
library.
Tape support
options enable you to specify how the backup tasks will distribute backups among the
tapes.
Some combinations of tape options might degrade usage efficiency of both the whole tape library and each
tape. If you are not forced to modify these options by some specific needs, leave them unchanged.
An archive can occupy several tapes. In such cases a so-called
tape set
is used for keeping the data
backups.
Tape set
is a logical group of one or more tapes which contain backups of the specific protected
data. A tape set can contain backups of other data as well.
Separate tape set
is a tape set which contains only backups of the specific protected data. Other
backups cannot be written to a separate tape set.
(For the backup policy/plan to be created) Use a separate tape set
The preset is:
Disabled
.
If you leave this option unchanged, then the backups, belonging to the policy or plan being created,
might be written onto tapes containing backups written by different backup policies and comprising
of data from different machines. Similarly, backups from other policies might be written onto the
tapes containing this policy's backups. You will not have a problem with such tapes, as the program
manages all the tapes automatically.
When this option is enabled, the backups, belonging to the policy or plan being created, will be
located on a separate tape set. Other backups will not be written to this tape set.
If the console is connected to the management server
The
Use a separate tape set
option has more precise definitions. So for the backup policy to be
created you can use a separate tape set for all machines or for each single machine.
The
A single tape set for all machines
option is selected by default. Generally this option ensures
more efficient usage of tapes, than the
A separate tape set for each single machine
option.
However the second one can be useful, for example, when there are special requirements to
store the tapes with backups from a specific machine off-site.
When the
Use a separate tape set
option is enabled, there might be a case when the backup has to
be written onto a tape that is currently out of the tape library device. Define what to do in this case.
Ask for user interaction
- the backup task will enter the
Need Interaction
state and wait for the
tape, with the required label, to be loaded into the tape library device.
Use a free tape
- the backup will be written onto a free tape, so the operation will be paused
only if there is no free tape in the library.
Always use a free tape
If you leave the options below unchanged, then each backup will be written onto the tape specified
by the
Use a separate tape set
option. With some of the options below enabled, the program will
add new tapes to the tape set every time when a full, incremental or differential backup is created.
For each full backup
The preset is:
Disabled
.
