Disk Utilization
Disk Utilization reports compare disk storage capacity to actual utilization for devices with on-disk storage. These reports are useful for assessing current needs and predicting future trends for storage resources.
- (Report Options). Jump to a detailed dashboard or control panel for:
- . Device hostname/IP address.
- . Disk label (device index in parenthesis).
- .Disk capacity.
- . Average percent of disk used for the selected date range. For understanding how to report the freshest measurements for storage associated with virtual machines, see VM considerations.
To display additional measurements, click a column heading () for column selection (). You can also include:
- . Minimum percent used for the selected date range.
- . Maximum percent disk used for the selected date range.
- .Average disk space used since polling began.
- . Minimum disk space used since polling began.
- .Maximum disk space used since polling began.
- . Average free space since polling began.
- . Duration since last sample.
Generate a report
. Choose one or more host devices you want Disk Utilization measurements for.
Use the Select Device dialog for one of the following:
Control
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Description
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Device
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Table/chart(s) of disks and usage metrics. Choose a single device to display all disks and their capacity usage.
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Device Group
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Ranked list. Choose to return the top-ranked disk with respect to capacity usage for each device in the selected group. You can also create custom or dynamic groups.
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Network
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Ranked list. Choose to display the top-ranked disk with respect to capacity usage for each WhatsUp Gold managed device.
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: You can organize devices into custom or dynamic groups. For more information, see Grouping Devices.
. (,) Choose times for the Disk Utilization. (For recently observed measurements, select from the Date Range drop down list.)
Choose time constraints for data view
Control
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Purpose
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Date Range
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Choose or define an overall date range.
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Business hours
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- Focus on specific days of the week and periods within each day.
- Reveal trends that are sensitive to business hours, time zones, and other periodic attributes in the observed data.
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. Choose and hide columns, reorder columns, and customize your data view.
Filter and pick by column
Click a report heading () and use the "column picker" () from the drop down list.
Control
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Purpose
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Columns.
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Click a check box to display the column. Clear the check box to hide it.
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Move Column.
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Click on a column heading and drag it to reorder your table's columns.
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. Fine tune report presentation and range of values displayed using the Report Settings dialog (optional).
Specify threshold and top n:
Control
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Purpose
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Show Top n Items
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Limit items to the samples with the highest (or lowest) utilization.
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Threshold Type
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Switch between minimum or maximum mode for cutoff values for the ranked list.
- At or Over. Show peak usage period. (Utilization percentage equal to or greater than Threshold.)
- At or Under. Show usage periods where resources are unused or possibly down. (Utilization percentage equal to or less than Threshold.)
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Threshold (percent)
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Baseline value used to trim ranked device list based on peak or subpeak capacity when returning the Top n.
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Chart and visualize data over time (single device )
Charting and visualization is available when you select a single device.
Control
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Purpose
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Display Options
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Present data as a chart, a table grid, or both.
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Chart Type
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- Gauge charts. Available when you select a Date Range of .
- Time series. Available when you select a Date Range interval (, for example).
- Line/Area. Scatter graph that connects adjacent measurements with straight lines.
- Spline/Area Spline. Choose a graph with a smoothed appearance where adjacent samples exhibit a gradual slope.
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Chart Options
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- Legend, Grid Lines, Range Selector. Include legend, grid lines, and range selector for readability.
- Trend Lines. Present data with a smoothed average to show trend.
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: Trend lines represent a moving average that can be compared with line and area graphs to reveal peak and sub peak intervals, periods of burstiness, latency, and interruption.
: This report only returns disk utilization metrics for devices that already have the appropriate performance monitoring enabled. To enable these polled measurements, see Disk Utilization Monitor.
: You can gain access to "root" (/) partition metrics for Linux and UNIX OS by using the SSH Monitor or by assigning the SNMP user (as designated in snmp.conf) with appropriate Sudoer privileges. Disk utilization measurements for a Linux or UNIX "root" partition (/) are at first typically not included in this report. When "root" (/) partition totals are not included, total disk capacity in the report typically appears 5% less than the physical disk.
Share, export, and save as PDF
Most generated Disk Utilization report data can be printed, shared, and exported when selecting () from the Dashboard Options () menu. After the report has been expanded, select export () to access the following options: