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HP Capacity Advisor Version 4.1 User's Guide

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HP Part Number: T8670-90010

Published: January 2009

© Copyright 2006-2009 Hewlett-Packard Development Company, L.P.

Acknowledgments

Table of Contents

About This Document

Intended Audience

Typographic Conventions

Related Information

Related Technical Papers

Publishing History

HP Encourages Your Comments

1 Introduction

Setup Considerations

Licensing Requirements
Installation
Collection Agents
Disk Space Requirements
Credentials
Dependencies

Upgrades and Reinstallation

Upgrading Software on the CMS
Upgrading Agents on the Managed Nodes

Navigating Within HP SIM, Virtualization Manager, and Capacity Advisor

Data Collection

Data Collection Infrastructure
Comparison of Agentless and UP Data Collection
HP PMP Data Differs from Utilization Provider Data

Experimentation

Sizing for Service Level Objectives

Modeling Considerations

Capacity Advisor Commands

3 Key Capacity Advisor Concepts

Capacity Planning Goals

Quality of Service

Utilization Monitor, Calculator, and Simulator

Data Handling for Virtual Machines

Resources for Which Capacity Advisor Collects Data

Upper Bounds

Measuring and Analyzing Resource Utilization

Peaks and Sums
Sampling Interval
Headroom
Missing or Invalid Data
Utilization Limits
Adjusting for Platform Changes
Adjusting for Virtualization Changes

Automating Solution Generation: HP Smart Solver

HP Smart Solver: Types of Solutions

Determining Trends in Capacity Advisor

Aggregation of Points in Business Interval Bins
Exclusion of Points
Linear Regression
Error Analysis

Forecast Calculations

The Forecast Model Hierarchy
Forecast Model Attributes

Cooling Calculations

Cooling Multiplier

4 Planning with Capacity Advisor

Getting Ready

Task: Planning Server Consolidation

Understanding the Process
Example: Consolidating to an Existing Server: Stacking Programs

Task: Estimating the Effect of Adding or Moving Processors

Introduction

Task: Determining Where to Put a New Workload

Introduction

Using the Smart Solver

Example
Types of Smart Solver Solutions
Getting More Detail

5 Basic Procedures

Accessing Capacity Advisor

Gathering Data for Capacity Advisor

Impact of Data Collection on Managed System Performance
Data Collection Options
First Data Collection (or the Automated Nightly Collection)
Interpreting Task Results
Scheduling a Data Collection
Modifying a Collection Schedule
Removing a Collection Schedule
Updating Collected Data
Collecting Data Without Using an Agent
Data Collection and the HP Insight Capacity Advisor Consolidation software
Importing Data for Use in Capacity Advisor
Possible Sources of Discrepancies in Collected Data

Producing Graphs and Reports

Using the Profile Viewer
Utilization Reports Overview
Analyzing Trends

Forecasting Future Utilization

Defining Forecast Models
Generating Forecasts

Working with Scenarios

Introduction
Creating a Planning Scenario
Editing a Scenario
Controlling the Data Display
Copying a Scenario
Renaming a Scenario
Undoing or Editing Changes to Scenario
Deleting a Scenario

Working with Systems

Introduction
Creating a System
Adding an Existing System
Editing a System
Editing Network and Disk I/O Capacity
Removing a System
Moving a Virtual Machine

Working with Workloads

Introduction
Creating a Workload
Editing a Workload
Moving a Workload
Parking a Workload
Removing a Workload

Working with Power

Power Cap Data
Power Calibration

Automating Time-Consuming Simulations

Automated Solution Finding: System Consolidation to VMs
Automated Solution Finding: Load Balance of Servers or VM Hosts
Automated Solution Finding: Workload Stacking

6 Using Capacity Advisor with Serviceguard

Using Serviceguard to Migrate HP Integrity VM Guests
Data Collection in a Serviceguard Environment

A Command Reference

B Units and Terminology

C Snapshots of a Scenario Comparison Report

D Troubleshooting in Capacity Advisor

Connection Problems
Data May Appear to be Old When it is Not
Data Seems to be Incorrect
Out-of-Memory Errors in the Java Heap
Scenario Editor Issues
Workload and System Relationships May Not Match When Comparing Capacity Advisor and Virtualization Manager Information

E Capacity Advisor Messages

Command Error Messages
Command Warning Messages
HP Smart Solver Error Messages
HP Smart Solver Informational Messages

List of Figures

2-1 Capacity Advisor Data Collection Infrastructure
2-2 CPU Utilization for Managed System puny03v8
2-3 CPU Utilization for Managed System puny03v7
2-4 Combined What-If CPU Utilization for puny03v8 and puny03v7
2-5 CPU Utilization with Selected Percentiles of Utilization
4-1 Example of Bar Graphs (Meters) on a System tab in the Scenario Editor
5-1 Comparison of Three Scenarios in a Capacity Advisor Report
E-1 Example 1. Solver Error Messages When Systems Have Insufficient Resources to Place a Workload
E-2 Example 2. Solver Error Messages When Too Few Systems Are Available for the Calculated Required Capacity Needed
E-3 Example 3. Solver Information Messages When Workload Requirements Exceed Available Capacity

List of Tables

2-1 A Comparison of Agentless Versus Utilization Provider Data Collection
2-2 Commands and Their Functions
3-1 Headroom Stars Defined
3-2 Percent of Time Conversions
3-3 Scope of Utilization Limits
3-4 Settings to Guide Estimated Utilization Assumptions for Workload
3-5 Forecast Models
3-6 Forecast Model Attributes
4-1 VM Host Configuration
4-2 Legacy Standalone Servers
5-1 Capacity Advisor Report Types
5-2 Forecast Models
5-3 Calibration Choices
5-4 IPM Calibration Links
A-1 Defaults
B-1 Units and Terminology
B-2 Data Collection for CPU Utilization by Platform
B-3 Data Collection for Disk I/O Bandwidth Utilization by Platform
B-4 Data Collection for Memory Utilization by Platform
B-5 Data Collection for Network I/O Bandwidth Utilization by Platform
E-1 Error Messages and Their Correction
E-2 Warning Messages in Capacity Advisor

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© 2006-2009 Hewlett-Packard Development Company, L.P.