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Chapter 4 Overview of Performance Optimization Function
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This section describes operations of the performance optimization function. The performance optimization function is
operated as shown in the following flow:
Installing Performance optimization function
Installation of NEC Storage Manager is accompanied by installing
the Performance optimization function at the same time. For using
the Performance optimization function, Work Disk for Optimization
must be specified.
Monitoring and analyzing load state
Activate the Performance optimization function screen and analyze
the load state on the basis of Busy Ratios displayed on the screen.
Because the busy ratio are displayed in different colors and the
information can be displayed in graphs, the bottlenecks of
concentrated I/Os can easily be identified. Use of the performance
monitoring function also allows more effective monitoring and
analyzing.
Replacement Plan
After detecting bottlenecks, replace the logical disks to distribute the
loads, removing the bottlenecks. Use of the replacement plan
function can easily prepare an effective planning of replacement.
Replacement Effect Prediction
Effectiveness of a replacement plan can be estimated before
practicing the replacement process. The effectiveness of
replacement can be verified by comparing the busy ratio before after
replacement with each other, which are indicated in values and
graphs. After verifying sufficient effectiveness of replacement,
proceed to the next step of performance tuning shown below.
Performance tuning
Apply the planned replacement practically, and remove the
bottlenecks by distributing loads.
Verifying arrangement of Work Disks for Optimization
The replacement causes the changes in arrangement of Work Disks
for performance optimization. Verify that the arrangement has no
problems, and if a problem is found, change the settings of Work
Disks for performance optimization.
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Operation flow
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Chapter 5 Installation of Performance
Part I Performance Monitoring Function
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Reference
Optimization Function
Bottleneck Detection Support
Operation on Screen
Replacement Plan
Operation on Screen
Replacement Effect Prediction
Operation on Screen
Performance Tuning
Operation on Screen
Logical Disk Movement Command
Command for Performance Tuning
Installation of Work Disks for
Optimization
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