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Chapter 1 Overview of Performance Monitoring Function
Disk port
Logical Disk
Physical Disk
RANK
(ii)
Information regarding changes in logical disk names
This is information regarding changes in logical disk names.
(iii) Information regarding changes in disk array configuration
This is information regarding changes in disk array configuration.
(iv) Information regarding changes in RANK configuration
This is information regarding Logical Disk moving between RANKs by the performance optimization function.
To extract (i) and (ii), you must specify extraction of configuration information in CSV Conversion Tool. (iii) and (iv) is
always extracted regardless of specification to CSV Conversion Tool.
When configuration of the disk array and RANK changes, statistic information before and after the change are no longer
related. Therefore, you must consider the following to analyze statistic information.
When information (iii) is output, statistic information regarding all configuration s collected before and after the output is
no longer related.
When information (iv) is output, only statistic information on the RANK collected before and after the output is no longer
related.
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As described in 1.5.3.4 "Extracting Statistic Information", a user can create CSV format files using the CSV conversion tool,
and can edit the data using spreadsheet software as required. This process makes analysis of the statistic information
easier.
Furthermore, use of the functions provided by iSM allows easy analysis without a spreadsheet program. iSM provides the
following edit functions for statistic information:
A program called Performance Report Editor for the user to edit/modify in a format easy for performance analysis and
output to a file the statistic information accumulated in statistic information history files and statistic information
summarized files.
Function of displaying graphs (Graph making tool) for files created with the edit tool (performance report).
(1) Performance Report Editor
The Performance Report Editor uses statistic information history/summarized files as inputs and edits/modifies the
statistic information into a text-format Performance Report. The user can reference the Performance Report to
readily analyze the performance of a disk array.
Types and overview of Performance Report are given below. For details of the Performance Report, refer to
Appendix C "Report Format of Performance Report Editor" of this manual.
(i)
Performance Summary Report
The Performance Summary Report is a component-based summary of statistic information on:
whole disk array
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