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NEC Storage PerformanceMonitor requires the following program product as a precondition.
• NEC Storage BaseProduct
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Refer to Chapter 3 "System Configuration of NEC Storage Manager" of the "NEC Storage Manager Manual Guide".
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This section describes operations of the Performance Monitoring Function. The Performance Monitoring Function is
operated in the flows shown below:
Operation flow
Installing Performance Monitoring Function
Installation of the Performance Monitoring Function is accompanied by
installing NEC Storage Manager at the same time.
Specifying targets of monitoring performances
For defining the targets of monitoring performances, specify disk array,
ports, logical disks, and physical disks composing logical disks used in
operations requiring responsibility such as online processing. Also,
specify monitoring items among those allowed for real-time monitoring
(I/O Density, transfer rate, etc.). For example, to monitor responses to
accesses from an application, average response time and I/O density
must be monitored.
Analyzing performances
Accumulate the statistic information of performance monitoring target
devices, with accesses from business programs. Then analyze the
statistic information by summarizing, extracting, and editing. On the
basis of the analyzed information, a maximum load level, load
fluctuation, and expected period of heavy load and future load
regulation are estimated. This analysis is performed regularly. If a
problem about performances is expected, an appropriate measure must
be taken in advance.
Specifying threshold value and monitoring overloads
On the basis of performance analysis results, specify threshold values
as indexes for detecting overloads. Loads exceeding a specified
threshold value are detected by NEC Storage Manager automatically,
and are reported on the NEC Storage Manager Client screen.
Continued to next page
Operation flow
continued from previous page
Upon detection of overload
Chapter 1 Overview of Performance Monitoring Function
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Chapter 2 Installation of Performance
1.5.1
Real-Time Display of Load State
3.1
Real-Time Display of Load State
1.5.3
Analysis support for statistic
information
3.3
Support for Analysis of Statistic
Information
A.1
Commands for Statistic
Information File
1.5.2
Monitoring Overloads
3.2
Monitoring Overloads
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Reference
Monitoring Function
Reference
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