Tandberg Data
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BakStor Installation and Administration Manual
5.2.4 Checking contents of a physical tape
Before using a tape for backup purposed the contents of the tape should be checked.
This prevents accidentally overwriting a tape containing data that should be saved.
Choose Backup Menu ? Restore menu ? Check tape contents
If the tape has previously been used to back up a slice from the BakStor the name of the slice
will be displayed.
5.2.5 Defining a backup policy
Choose Backup menu ? Define / Redefine a BP
The following information needs to be entered:
Slice name. Specify the slice to be backed up.
Do snapshot yes/no. If selected, the BakStor will make a snapshot of the slice to be
backed up before starting the backup process. The snapshot will then be copied to tape
and deleted once the copy process is done. This allows the slice to stay online and be
used by an iSCSI initiator during the tape backup process. Any changes made to the slice
after the snapshot is made will not be backed up to the tape, but this option makes it
easier to control the state of the slice when it is copied to tape.
Tape drive. In the case of multiple tape drives this allows a specific device to be used for
the backup job.
Library slot. In the case of a tape library this allows a specific slot in the library to be
used. The BakStor will communicate with the library to ensure that the tape from the
correct slot is loaded for the job.
Click the ACCEPT button to activate the BP
Note: There are some restrictions on backing up to physical tape:
1. Only one slice can be backed up to one physical tape.
2. The slice must be equal to or smaller than the physical tape. The BakStor will not
span physical tapes. (This restriction includes spanning tapes in a tape library)
3. The BakStor performs a block level backup of the slice. The BakStor has no means of
accessing the file system created by the iSCSI initiator and as such cannot perform a
file level backup. This means the entire slice will be backed to tape, even if the slice
contains little or no actual data.
4. If a diskslice is backed up to the tape containing the backup can only be restored on a
BakStor unit.
5. If a tapeslice is backed up and “native mode” is selected the tape containing the
backup can only be restored on a BakStor unit.
6. If a tapeslice is backed up and “application mode” is selected the tape containing the
backup can not be restored on a BakStor unit, but must be restored on a computer
outfitted with a correct physical tapeunit and correct backup software.
