HP Capacity Advisor 7.0 User Guide

Contents
1 Introduction...............................................................................................9
Setup considerations...............................................................................................................10
Licensing requirements........................................................................................................10
Installation........................................................................................................................10
Collection methods.............................................................................................................10
Disk space requirements ....................................................................................................11
Credentials.......................................................................................................................11
Dependencies...................................................................................................................11
Upgrades and reinstallation.....................................................................................................11
Upgrading agents on HP-UX or OpenVMS managed systems..................................................12
Navigating within Matrix OE and Capacity Advisor ...................................................................12
2 Features..................................................................................................13
Data collection.......................................................................................................................14
Data collection infrastructure................................................................................................14
Supported collection configurations......................................................................................15
Comparison of agentless and UP data collection....................................................................16
HP PMP data differs from Utilization Provider data..................................................................17
Differences in memory data ...........................................................................................17
Differences in network data ...........................................................................................17
Related topics..........................................................................................................17
Experimentation.....................................................................................................................18
Sizing for service level objectives..............................................................................................19
Modeling considerations.........................................................................................................20
Capacity Advisor commands....................................................................................................20
3 Key Capacity Advisor concepts..................................................................21
Capacity planning goals.........................................................................................................21
Quality of service .............................................................................................................21
Utilization monitor, calculator, and simulator..............................................................................21
Data handling for virtual machines.......................................................................................21
Data normalization............................................................................................................22
Resources for which Capacity Advisor collects data.....................................................................22
Upper bounds...................................................................................................................22
Measuring and analyzing resource utilization.............................................................................23
Peaks and sums.................................................................................................................23
Sampling interval...............................................................................................................23
Headroom........................................................................................................................24
Headroom star rating....................................................................................................24
Interpreting the headroom star rating..........................................................................24
Missing or invalid data.......................................................................................................25
The affect of invalid data on HP Smart Solver solution finding.............................................26
Utilization limits ................................................................................................................26
Specifying utilization limits..............................................................................................26
Sustained time limits.................................................................................................27
Percentage of time limits............................................................................................27
Understanding utilization limit messages...........................................................................28
Percentage of allocation............................................................................................28
With sustained limits.................................................................................................28
With percentage of time limits....................................................................................28
Scope of utilization limits................................................................................................28
Adjusting power.....................................................................................................................29
Contents 3