Logical Capacity; Physical Capacity - HP 12000 User Manual

Item Data
8 Time stamp
9 Ignore this field

Logical Capacity

This tab displays different views of the current logical capacity usage for an individual library or
the entire VLS system. Logical capacity is the amount of data the backup application wrote, while
the physical capacity is the amount of data actually stored on the disk.
Select the Show Details link in the first section to display the breakdown of the logical and physical
capacity and the deduplication ratio. To export the deduplication CSV data, enter the number of
days to include in the report and select Export. (See
information.)
To change the information displayed in the graphs:
1. Select the date range to include in the report:
Start date — the date you want as the starting point for stepping back into the past by
some number of days to establish a particular date range. This is effectively the end date
of the date range.
Hour of the day — the hour of the day, in 24 hour time, to use in conjunction with the
Start date.
Going back — the number of days to step back from the selected start date to establish
a date range.
For example, if you select June 20 at 10 going back 3 days, the graph will include data from
June 17 at 10:00 a.m. to June 20th at 10:00 a.m.
NOTE:
for each day will display in the graphs. For example, for two days of data the graphs will
show one data point for every two hours, while for seven days of data the graphs will show
one data point for every seven hours.
2. In some cases, there are more data points than the graphs can display. You must select how
the system chooses which data point to use for each time period displayed. For example, if
you show four days of data the graphs show one data point for every four-hour period. Use
the Advanced Setting list to indicate which data point out of that four-hour period is used:
First data point — the first data point for each time period.
Maximum data point — the data point with the highest value for each time period.
Minimum data point — the data point with the lowest value for each time period.
3. Select a specific virtual library to view from the list, or use "VLS Device" to include all libraries
(Logical Capacity tab only).
4. Select Update Graphs. The graphs update to reflect the data options you chose.
NOTE: The final graph displays the history of the logical capacity for the entire VLS and does
not change if you choose to view a specific library.

Physical Capacity

This tab displays different views of the physical capacity usage for an individual library or the
entire VLS system. Physical capacity is the amount of data actually stored on the disk, while the
logical capacity is the amount of data the backup application wrote. In a deduplicated environment,
the physical capacity reported represents data after compression and deduplication; without
deduplication it represents data after compression.
128 Monitoring
The greater the number of days included in the date range, the fewer the data points
"Exporting CSV Data" (page 125) for more