Download SnapSAN 3000/5000 Disk Array User Guide

SnapSAN 3000/5000 Disk Array User Guide
Operation of Performance Monitoring Function
Operation of Performance Monitoring Function
This section describes operations of the performance monitoring function. The performance
monitoring function is operated in the flows shown below:
OPERATION FLOW
1. Installation
Installing performance monitoring function
Installation of the performance monitoring function is accompanied by installing iSM at the
same time.
2. Specifying targets of monitoring performance in real-time
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.
3. Analyzing performances
Accumulate the statistic information of performance monitoring target devices, with
accesses from application 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.
4. 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 iSM
automatically, and are reported on the iSM Client screen.
5. Detection
Upon detection of overload
10400386-001 07/2012
©2012 Overland Storage, Inc.
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