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Chapter 4 Overview of Performance Optimization Function
Chapter 4 Overview of Performance Optimization
The Performance Optimization function (NEC Storage PerformanceOptimizer) is capable of analyzing the causes of lowered
responses in the NEC Storage series Disk Array Subsystem and improving its performances. An administrator, with use of the
Performance Optimization function, analyzes the performances of disk array under the control of iSM, by centralized operations
on an iSM client and tunes the performances as necessary.
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As the volume of business data increases day by day, the scale and capacity of disk array become larger. Access
patterns have also been diverted due to the use by multiple business systems.
To maintain quick response of the business system, it is necessary to monitor the load state of disk arrays and detect a
bottleneck and improve it. This work, however, requires advanced technical knowledge and techniques of
performance analysis and tuning operations. Furthermore, when it is necessary to tune the performance, business
operations may be stopped for a while, causing inconvenience to business operations.
The NEC Storage PerformanceOptimizer solves such problems. Introduction of the NEC Storage
PerformanceOptimizer makes it possible to properly and easily conduct painstaking performance analysis and tuning
operations. A tuning operation can be done while business is in operation, thereby maintaining optimal disk
performance around the clock without stopping business operations.
Business server
Function
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Large number of diversified
Figure 4-1 Concept of NEC Storage PerformanceOptimizer
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Performance deterioration
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NEC Storage
PerformanceOptimizer
Performance analysis/tuning
accesses
Optimal performance with
no bottleneck
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NEC Storage Series
Dynamic execution of
rearrangement without stopping
business operations
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I/O
concentration
Cancellation
of bottleneck
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