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This process affects only the system workload for the virtual machine. If monitored workloads are
defined inside the virtual machine, their data is tracked correctly even when the virtual machine
fails over to a new host. It is a good idea to create a workload inside any virtual machine that you
intend to fail over using Serviceguard to ensure that the utilization data of the virtual machine is
kept whole.
TIP:
Prevent data loss
To prevent the loss of utilization data when migrating Integrity VM guests using Serviceguard,
create a monitored workload for the processes of interest on the virtual machine.
If there is no monitored workload, then utilization data for the failed-over system is split across two
or more workloads. To prevent this, use the following procedure to treat these multiple workloads
as a single workload:
1. Create a scenario and include the current virtual machine host.
2. Within that scenario, create a new workload and import data from the unrepresented workload.
(Create two or three workloads, if needed.)
3. Place these new workloads in the current virtual machine.
4. When you edit or move one of these workloads, do the same with the others.
The virtual machine containing the multiple workloads can be moved within the scenario and can
give a complete picture of past utilization. The collection of these multiple workloads gives you a
nearly uninterrupted view of the historical utilization for the virtual machine.
Virtual machines that are moved between hosts using the hpvmmigrate command preserve their
UUIDs and are not seen as two virtual machines.
Data collection in a Serviceguard environment
When you collect data from a virtual machine, Capacity Advisor is aware of the guest/host
relationship and collects data from the virtual machine host as well as from the virtual machine.
However, Capacity Advisor does not have knowledge of Serviceguard cluster membership, so
when you collect data when viewing a Serviceguard workload, Capacity Advisor collects data
only from the system you are viewing but not from any other systems in the Serviceguard cluster.
If the workload has executed on any cluster members other than the one you are viewing since
the last time data was collected on all the systems in the cluster, there will be gaps in the data
profile for the Serviceguard workload for those times when the workload was executing on another
cluster member. To fill these gaps, collect data manually from all nodes in the cluster.
156 Using Capacity Advisor with HP Serviceguard
- Abstract 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- 8 Contents 8
- Contents 9 9
- 10 Contents 10
- 1 Introduction 11
- Setup considerations 12
- Upgrades and reinstallation 13
- 14 Introduction 14
- 2 Features 15
- Data collection 16
- Data collection 17 17
- Differences in memory data 19
- Experimentation 20
- Modeling considerations 22
- Capacity Advisor commands 22
- Capacity planning goals 23
- Data normalization 24
- Upper bounds 24
- Headroom 25
- Peaks and sums 25
- Sampling interval 25
- Headroom star rating 26
- Missing or invalid data 27
- Utilization limits 28
- ◦ CPU cores 28
- ◦ Memory 28
- ◦ Network I/O bandwidth 28
- ◦ Disk I/O bandwidth 28
- ◦ Percentage of time limits 29
- Scope of utilization limits 30
- Adjusting power 31
- Exclusion of data points 33
- Forecasting growth 34
- Forecast model attributes 35
- 4 Procedures 37
- Data retention period 38
- Data collection options 38
- 40 Procedures 40
- Viewing the licensed servers 42
- From the command line 44
- Producing graphs and reports 46
- Optimize 48
- Using the report wizard 49
- The report wizard 50
- 52 Procedures 52
- 54 Procedures 54
- Creating a population report 56
- Creating a trend report 56
- Setting utilization limits 57
- Adding a utilization limit 58
- Removing a utilization limit 58
- Forecasting utilization 60
- Forecasting utilization 61 61
- 62 Procedures 62
- Defining a forecast model 63
- Working with scenarios 64
- Creating a planning scenario 65
- Editing a scenario 66
- Controlling the data display 67
- Copying a scenario 68
- Renaming a scenario 69
- Getting there 70
- Deleting a scenario 71
- Working with systems 72
- Adding an existing system 73
- Editing a system 74
- Changing VMs to be servers 74
- Change servers to be VMs 75
- 76 Procedures 76
- Working with systems 77 77
- Moving a virtual machine 78
- Working with workloads 79
- Creating a workload 80
- Editing a workload 81
- Moving a workload 81
- 82 Procedures 82
- Parking a workload 83
- Deleting a workload 83
- Calibrating a single system 85
- 86 Procedures 86
- Begin with a scenario 89
- 90 Procedures 90
- Expected results 91
- Choose the workloads to stack 95
- 96 Procedures 96
- Getting more detail 97
- 98 Procedures 98
- 5 Using Capacity Analysis 99
- Accessing Capacity Analysis 100
- Exploring the Analysis tab 100
- Working with the Analysis tab 101
- Analysis queries table 103
- 104 Using Capacity Analysis 104
- Analysis query results table 105
- Predefined analysis queries 106
- Finding overused systems 107
- Controlling power costs 109
- Prerequisites 109
- Creating the query 109
- 110 Using Capacity Analysis 110
- Constructing a filter 112
- Filter creation tips 114
- Using sub-expressions 114
- Attribute selection 115
- System Tab 116
- Memory Tab 118
- Network Tab 119
- Disk Tab 120
- Power Tab 121
- Custom query examples 122
- Defining the query 123
- Revising the query 124
- Background 125
- Requirements 126
- Custom query examples 127 127
- 128 Using Capacity Analysis 128
- Custom query examples 129 129
- Changing analysis queries 130
- Getting ready 131
- Related topic 133
- Related topics 138
- Adding processor cores 140
- Screen 1 of 3 144
- Screen 2 of 2 145
- Screen 3 of 3 145
- Create a planning scenario 149
- When there is no connection 157
- Data is not being collected 158
- Other possibilities 160
- Setting the time or time zone 160
- 2003 Server 162
- Data cannot be imported 164
- Working with reports 166
- Working with power 167
- Workload issues 168
- Command error messages 171
- Command warning messages 172
- Contacting HP 177
- Related information 177
- Calculation assistance 179
- Memory multiplier 180
- CPU workload multiplier 181
- Memory workload multiplier 181
- Disk I/O workload multiplier 182
- CPU Virtualization Overhead % 183
- Hypervisor memory overhead 184
- 186 Calculation assistance 186
- Command reference 189
- SYNOPSIS 190
- DESCRIPTION 190
- 192 Command reference 192
- Dependencies 193
- EXAMPLES 194
- DOCUMENT LAST UPDATED 194
- RETURN VALUES 197
- FILES ON CMS 198
- SEE ALSO 198
- # capagentlesscfg -m180 202
- Units and terminology 207
- Scenario comparison report 211
- Workload Detail 212
- Scenario Inventory 213
- Glossary 219
- 222 Glossary 222
- 224 Glossary 224
- 226 Glossary 226
- 228 Index 228
- 230 Index 230
- 232 Index 232
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