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Chapter 8. Capacity Manager 143
• Global Sampling Frequency
This determines how often data is collected, and therefore, the granularity of
your report data. You can select:
– 1minute
– 5 minutes
– 30 minutes
– 1 hour
– 1day
You may want to choose a larger value if you are concerned about the space
taken to store this data. Not all of these choices will be available. If you choose
a duration of one week or one month, the one minute sampling frequency will
not be available. This is because the data for the last 24 hours is saved per
minute, but after a day, data is averaged to one value per five minutes.
You can also specify a sampling frequency for specific monitors to override
this global value. This is done via the Monitor Selection button.
Note: Raw data is gathered at one-minute intervals. These one-minute values
are instantaneous values and are not averages over the last minute of activity.
This means that any spikes in usage that do not continue over a sampling
point will not be recorded.
• Collecting Minimum and Maximum Values
Collecting minimum and maximum values gathers the highest and lowest
value for each monitor within the sampling frequency. Doing so triples the size
of report files and slows performance in the Report Viewer, but it provides
valuable data, especially if the sampling frequency is set to a large amount of
time. Minimum and maximum values are not available when the sampling
frequency is set to the smallest sampling frequency available for that time
period.
• Days and Times
The next step is to define when data is collected. To make your report
accurately reflect the use of your systems, you can select the days and times
they are typically used. To define days, click the check boxes of the days you
want included. To define times to measure, click the New button and enter
start and stop times in the window shown in Figure 134.
To measure the entire day, select 0:00 for both choices. To exclude times when
systems are typically not used (for example, the lunch hour) you can define
more than one time in this field. Click the Edit button and enter 08:00 for the
start time and 12:00 for the end time. Click the New button and enter 13:00 for
the start time and 17:00 for the end time.
If you wish to display minimum and maximum values in the Report Viewer
(8.6.4.3, “Showing Minimum and Maximum Values” on page 154), we
strongly recommend you collect the min/max data at this point. If you don’t
collect the min/max data but choose to display the min/max values anyway,
then the graphs displayed will be approximations based on incomplete data
and are likely to be inaccurate.
Note
- SG24-5319-00 1
- February 2000 3
- Contents 5
- Comments welcome 10
- Chapter 1. Introduction 11
- 1.1 IBM and Microsoft 12
- Chapter 1. Introduction 3 13
- Chapter 1. Introduction 5 15
- Windows NT 4.0: 16
- Chapter 1. Introduction 7 17
- Figure 2. Computer Management 17
- 2.1 Netfinity models 19
- 2.1.3 Netfinity 3000 22
- Table 3. Netfinity 3000 23
- 2.1.4 Netfinity 3500 M10 24
- Table 4. Netfinity 3500 M10 25
- 2.1.5 Netfinity 4000R 26
- Table 5. Netfinity 4000R 27
- 2.1.6 Netfinity 5000 28
- Table 6. Netfinity 5000 29
- 2.1.8 Netfinity 5600 32
- Table 8. Netfinity 5600 33
- 2.1.9 Netfinity 7000 M10 34
- Table 9. Netfinity 7000 M10 35
- 2.1.10 Netfinity 8500R 36
- Table 10. Netfinity 8500R 37
- 2.2 ServeRAID SCSI adapters 38
- 64/32-bit PCI Connector 39
- 32 MB EDO Cache 39
- LED Connector 39
- Battery-Backup Cache Slot 39
- 2.2.3 LVDS SCSI connectivity 40
- 2.2.4 ServeRAID adapter cache 41
- 2.3 Fibre Channel products 42
- Ethernet Port 45
- Serial Port 45
- Power Supply #1 45
- Port 7Port 0 45
- Power Supply #2 45
- 2098-02a 47
- 2.3.6 Fibre Channel cables 48
- Figure 24. Netfinity EXP200 49
- 2.5 Netfinity Director 50
- ASM interconnect 56
- Internal ASM 56
- © Copyright IBM Corp. 2000 49 59
- © Copyright IBM Corp. 2000 51 61
- Free update package 62
- Figure 32. The main menu 65
- Figure 35. Available programs 67
- Figure 40. General Setup 72
- Figure 42. Network Setup 73
- Virus alert 75
- 4.3 Replicated installations 76
- 4.4 What’snext? 76
- SMP support 78
- 5.1 SCSI disks 79
- 5.2 ServeRAID-attached disks 80
- 5.3 SMP support 83
- Figure 49. Processor options 84
- 5.4 Installing Windows 2000 85
- Figure 53. Regional Settings 87
- Figure 56 88
- Figure 59. Network Settings 90
- For more information 94
- © Copyright IBM Corp. 2000 85 95
- Figure 67. The Driver tab 97
- Important 102
- 6.2.3 Using the ASM hardware 111
- 6.4 PCI Hot Plug 113
- 6.5 Disk management 119
- 6.5.1 Basic and dynamic disks 120
- ServerGuide users 122
- Figure 100. Create Volume 123
- 6.6 Creating a repair disk 126
- Figure 106. ERD creation 127
- Figure 110. Device Manager 130
- Figure 114. Show all hardware 132
- Figure 115. Performance 135
- 7.1 System Monitor 136
- Monitoring disk activity 137
- Figure 119. Chart view 139
- 7.4.1 Adding objects 140
- 7.4.2 Deleting objects 141
- 7.5.1 Creating a counter log 142
- Figure 126. New counter log 143
- Figure 127. Log Files tab 144
- Figure 128. Schedule tab 144
- Selecting a time frame 145
- Chapter 8. Capacity Manager 147
- Report Definitions 148
- 8.4 Monitor Activator 150
- 8.5 Report Generator 151
- Figure 137. Monitor Selection 155
- 8.5.3 Generating a report 157
- 8.6 Report Viewer 159
- 8.6.1 Setting thresholds 160
- 8.6.2 The System pane 161
- 8.6.3 The Monitor pane 163
- 8.6.4 The Graph pane 163
- 8.7 Performance analysis 166
- 8.7.1 Reports produced 167
- 8.7.2 Types of bottlenecks 168
- Highlighted monitors 169
- 8.7.4 Forecast 170
- Figure 152. Forecast graph 171
- Appendix A. Special notices 173
- B.1 IBM Redbooks publications 175
- B.2 IBM Redbooks collections 175
- B.3 Referenced Web sites 175
- How to get IBM Redbooks 177
- IBM Redbooks fax order form 178
- List of abbreviations 179
- , 30, 40 183
- , 61, 76 183
- IBM Redbooks evaluation 187
- Printed in the U.S.A 188
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