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:
Operation flow
Reference
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.
Chapter 5 Installation of Performance
Optimization
Function
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.
Part I Performance Monitoring Function
4.5.1 Bottleneck Detection Support
6.2 Operation
on
Screen
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.
4.5.2 Replacement
Plan
6.2 Operation
on
Screen
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.
4.5.3 Replacement Effect Prediction
6.2 Operation
on
Screen
Performance tuning
Apply the planned replacement practically, and remove the
bottlenecks by distributing loads.
4.5.4 Performance
Tuning
6.3 Operation
on
Screen
7.1
Logical Disk Movement Command
A.2
Command for Performance Tuning
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.
5.3
Installation of Work Disks for
Optimization
