Backup Tape Usage
This screen shows three different charts. Displayed statistics
information only correspond to selected tapes. When the selection is
changed, charts are updated.
Throughout this help text, we will suppose we have selected four
tapes.
Number of backup tapes
This is the pie chart displayed on the upper left side of the
screen. It shows the percentage of tapes which belongs to one of the
following categories among the selected tapes:
- free tapes
- tapes in use (ie: with some data written to them, but not
full)
- full tapes
- worn-out tapes
As an example, from the image below, we show that:
- 4 tapes are selected (ie: 'Total: 4')
- 1 tape is free, which represents 25 % of the total number of
selected tapes
- 1 tape is in use, which represents 25 % of the total number of
selected tapes
- 1 tape is full, which represents 25 % of the total number of
selected tapes
- 1 tape is worn-out, which represents 25 % of the total number of
selected tapes

Tape space
This is the pie chart displayed on the lower left side of the
screen. It shows the total amount of available and used storage space in
selected tapes.
As an example, from the image below, we show that:
- A total of 278 MB of storage space is still available in the 4
selected tapes. This represents 69.5 % of the total amount of
storage space in selected tapes.
- A total of 122 MB of storage space contains backed up data in the
4 selected tapes. This represents 30.5 % of the total amount of
storage space in selected tapes.

Backup tapes details
This is the histogram chart displayed on the right of the screen. It
shows some information about each selected tape and how storage space of
each selected tape compares to the others.
As an example, from the image below, we show that:
- 4 tapes are selected: each bar represents a tape. The number above
each bar (ie: 10, 11, 12, 13) identifies each tape, as indicated
in the list on the left of the screen.
- The 4 selected tapes have the same size: 100. The vertical scale
represents the amount of data: the unit (MB, GB, etc...) depends
on selected tapes.
- tape (10) is partially used
- tape (11) is full
- tape (12) is free
- tape (13) is free and worn-out
