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HP Integrity Essentials Capacity Advisor provides trend
analysis to allow you to better understand how the utilization of
resources is changing over time and multiple levels of forecast
models to allow precise control of forecasting future utilization. Controlling Trend Calculations | |
Trends are calculated automatically when reports are generated.
Defining the basis for calculating the trend is important to
ensure accurate analysis of the utilization data. Controlling Trend Calculation Prerequisites. To control trend calculation: You must be logged in to HP Systems Insight Manager
(see Accessing Capacity Advisor). You must have already collected data on the systems
of interest (see Collecting Data). You must be authorized and licensed on all systems
you wish to include in the report (see VSE Management
Software Quick Start Guide Version A.03.00.00 ).
Procedure 4-13 To Control Trend Calculations Follow the procedure Generating a Report until you
get to the screen Step 1 of
2: Select Report Targets. Make sure the check-box preceding Trend Summary is checked. Click the check-box preceding Trend Details. Click the Next button. The Step 2 of 2: Select Report Details screen will be displayed. Select a Business Period appropriate to your environment.
See Trend Calculations for a
description of how the business period is used. Enter the desired percent of valid
points required for a business period to be used in calculating
the trend into the Valid Threshold field. Requiring higher percentages of valid points
can make the business periods analyzed more meaningful,
but can also reduce the number of business periods available
for the analysis, making the overall analysis less useful. Select the desired trend to calculate
by selecting one of the radio buttons following Compute Trending of. To include information on the quality
of the regression result, click the check-box preceding Include Error Analysis. Click the Finish button. Continue with the original procedure.
Suppressing Trend CalculationWhen viewing forecast data, you may want to suppress the trend
calculation since trend analysis based on forecast data is
not meaningful. Prerequisites. To suppress trend calculation: You must be logged in to HP Systems Insight Manager
(see Accessing Capacity Advisor). You must have already collected data on the systems
of interest (see Collecting Data). You must be authorized and licensed on all systems
you wish to include in the report (see VSE Management
Software Quick Start Guide Version A.03.00.00 ).
Procedure 4-14 To Suppress Trend Calculations Follow the procedure Generating a Report until you
reach the screen Step 1 of 2:
Select Report Targets. Click on the check-box preceding Trend Summary. The check-mark will be removed from the box and the check-box
preceding Trend Details will be grayed out. Click the Next button and continue with the report
generation procedure.
Defining Forecast Models | |
Whenever a Capacity Advisor report or profile is generated with
an end date later than the current date, the historical utilization
data must be projected into the future. The projection is indicated
in the utilization graphs by a colored background. This projection
is done based on a forecast
model. Forecast models can be defined globally,
for individual workloads or systems, for a scenario, and for
individual workloads within a scenario. Since the process for
defining a forecast model is basically the same regardless of
where it is in the hierarchy of forecast models, the procedures
below are broken into two parts: accessing the forecast model
and defining it. | | | |  | NOTE: Although forecast models cannot be deleted, all but the global
forecast model can be disabled and enabled. Follow the appropriate
procedure for accessing the forecast model and then follow
the procedure for disabling or enabling it. | | | | |
The Forecast Model HierarchyThe forecast model can be specified at four different levels
within Capacity Advisor, with more specific forecast models
overriding more general models, as indicated in the following
table: Table 4-1 Forecast Models | Forecast | Description | Overrides |
|---|
| Global Forecast | Applies to all workloads in Capacity Advisor for which a
more specific forecast is not provided. | | | Workload Forecast | Applies to a specific workload in Capacity Advisor unless a
more specific forecast is provided. | | | Scenario Forecast | Applies to all workloads within a Capacity Advisor scenario
for which a more specific forecast is not provided. | | | Scenario Workload
Forecast | Applies to a specific workload within a Capacity Advisor
scenario. | | • Global | | • Workload | | • Scenario |
|
Accessing the Global Forecast ModelThe annual growth rates for the global forecast model are frequently
based on an organization's planned growth rate. The global
forecast model applies to all reports generated on systems
and complexes. Reports on workloads or scenarios without a
forecast model also use the global forecast model. Prerequisites. To define the global
forecast model: Procedure 4-15 To Access the Global Forecast Model If you are not on the Capacity Advisor tab: If the Capacity Advisor tab is visible, click the Capacity Advisor tab. If the Capacity Advisor tab is not visible, select Optimize Capacity AdvisorView Scenarios... from the upper, HP SIM menu bar.
The Capacity Advisor tab
will open, with a list of scenarios. From the lower menu-bar, select ModifyGlobal Forecast... The Forecast Editor - Global Forecast
Model screen will be displayed. To define the forecast model, follow
the procedure Defining a Forecast Model.
What Now? You might want to: Accessing the Forecast Model for a Workload or SystemIf the resource utilization of an individual workload or system
is expected to change differently from that predicted by the
global forecast model, a different forecast model can be provided. | | | |  | IMPORTANT: The forecast model for a system is not inherited by any sub-OS
workloads. If a system with sub-OS workloads is included
in a scenario, the forecast model will not be used within the scenario. | | | | |
Prerequisites. To define the forecast
model for a workload or system: Procedure 4-16 To Define the Forecast Model for a Workload or System If you are not on the VSE Management: Virtualization Manager screen, from the upper, HP SIM menu, select ToolsVSE Management.... The VSE Management: Virtualization
Manager screen will be displayed. To define the forecast model for a system, click the
System tab. The System tab will open,
displaying the VSE managed systems. To define the forecast model for a workload, click
the Workload tab. The Workload tab will open,
displaying the VSE workloads.
Click on one of the bar-graphs
representing CPU or memory utilization for the system
or workload of interest. The Capacity Advisor - Profile Viewer screen will be displayed for the system or workload. Click the Edit Forecast Model... link above the Refresh button. The Forecast Editor - Workload Forecast
Model screen will be displayed (for both workloads
and systems).
What Now? You might want to: Accessing the Forecast Model for a ScenarioDefining a separate forecast for a scenario allows you to provide
estimates of utilization based on differing growth projections. Prerequisites. To define the forecast
model for a scenario: Procedure 4-17 To Access the Forecast Model for a Scenario If you are not on the Capacity Advisor tab: If the Capacity Advisor tab is visible, click the Capacity Advisor tab. If the Capacity Advisor tab is not visible, select OptimizeCapacity AdvisorView Scenarios... from the upper, HP SIM menu bar.
The Capacity Advisor tab
will open, with a list of scenarios. The names of any scenarios for
which you have authorization to define a forecast model
will be displayed as links. Click the radio button preceding
the scenario for which you wish to define the forecast
model. The row containing the scenario will be highlighted and the
radio button will be filled-in to indicate selection. From the lower menu-bar, select ModifyScenario-wide Forecast... The Forecast Editor - Scenario-wide
Forecast Model screen will be displayed.
| | | | | NOTE: You can also access the scenario forecast model while editing
a scenario by selecting EditScenario
Wide Forecast... form the menu-bar in the
scenario editor. | | | | |
What Now? You might want to: Accessing the Forecast Model for a Workload Within a ScenarioIf the resource utilization of an individual workload within
a scenario is expected to change differently from the scenario
forecast model, a different forecast model can be provided
for the workload. Prerequisites. To define the forecast
model for a workload within a scenario: Procedure 4-18 To Define the Forecast Model for a Workload Within a Scenario If you are not viewing the workloads,
click the Workload tab. The Workload tab will open,
revealing a list of the workloads in the scenario. Click the check-box preceding a
single workload. A check-mark will fill the check-box preceding the name of the
workload and the row containing it will highlight to indicate
selection. Select EditScenario Workload Forecast... from the
menu-bar. The Forecast Editor - Scenario Workload
Forecast Model screen will be displayed.
What Now? You might want to: Defining a Forecast ModelOnce you have accessed the forecast model at the correct level,
use the following procedure to define it. Procedure 4-19 To Define a Forecast Model Provide a brief description of
the forecast model in the Description field Specify an appropriate range of
data to base the forecast on in the Forecast Data Range Selection fields. To understand
how the forecast calculation uses the data range, see
Forecast Calculations Provide Annual Projected Growth Rates for CPU and
Memory (positive values for increasing utilization, negative
values for decreasing utilization, and zero for no change).
You may want to use trend data derived from analysis of
the historical data (see Controlling Trend Calculations). Click the OK button.
Disabling a Forecast ModelProcedure 4-20 To Disable a Forecast Model While it is not possible to delete a forecast model, forecast
models at all levels below the global forecast model can
be disabled by accessing the appropriate forecast model
and using the following procedure. Click the Disable radio button. The radio-button circle will be filled in, indicating
selection. Click the OK button.
Enabling a Forecast ModelIf you have previously disable a forecast model, you can re-enable
it by accessing the appropriate forecast model and using the
following procedure. Procedure 4-21 To Enable a Forecast Model Click the Enable radio button. The radio-button circle will be filled in, indicating
selection. Click the OK button.
Generating Forecasts | |
Once you have defined one or more forecast models, you can view
the results of the forecast models two ways: Viewing Forecast Data in a Profile ViewerThe profile viewer provides a quick view of resource utilization
for a system, complex, or workload. Once the profile viewer
is posted, you can view the forecast by extending the date
range into the future. Prerequisites. To view forecasts withing
a profile viewer: Procedure 4-22 To View Forecast Data Within a Profile Viewer Change the Time Frame and/or Interval and/or Beginning and/or Ending for the profile to include future dates and/or times.
If necessary, click the Refresh button. The graph will be updated. Historical utilization data will
be plotted on a white background and forecast data will
be plotted on a colored background.
Viewing Forecast Data in a Utilization ReportUse the procedure specified in Generating a Report and specify
Ending (and possibly
Beginning) times under Date Selection to include future
times. Historical utilization data will be plotted on a white background
and forecast data will be plotted on a colored background. |
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