HP 12000 HP StorageWorks 12000 Gateway Virtual Library System User Guide (AH81 - Page 159
Physical Capacity, SAN Health, Update Graphs, Export, Available Locations, >>, Selected Locations
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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. To export the physical capacity CSV data, enter the number of days to include in the report and select Export. (See "Exporting CSV Data" on page 155 for more information.) To change the information displayed in the graphs, follow Step 1, Step 2, and Step 4 in "Logical Capacity" on page 158. The final two graphs allow you to view the physical capacity for a specific storage pool or library. You can also change the graph type from stacked to line. Use the lists to make your selections and then select Update Graphs. SAN Health The SAN Health tab displays information on the number and types of errors encountered on the SAN. See Figure 38 on page 160. To export the CSV data, in the Export Data section of the screen enter the number of days to include in the report and click Export. When you open the SAN Health tab, the graph at the bottom of the screen displays information for the top 16 locations from all location categories with the most errors. You can change the information displayed in the graph: 1. Select a location category. 2. Select the specific locations of interest from the Available Locations box. 3. Using the >> button, move the locations of interest into the Selected Locations box. These are the locations that will display in the report. You can use the