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The statistic information collected from disk array is accumulated in a statistic information history file. One statistic
information history file stores the statistic information for one day collected from one disk array. A statistic information
history file is automatically created in a directory specified by environment definition.
ARRAY1
LAN
Statistic information history files are created based on the following naming conversion.
Naming Convention for Statistic Information History Files:
yyyymmdd Disk Array Name [#nnn].psl
(i)
yyyymmdd
The year, month, and day when accumulation to the statistic information history file started. If date changes while
statistic information is being accumulated, accumulation is done to a new statistic information history file.
(ii)
Disk Array Name
This is the name of the disk array. Statistic information history files are created for each disk array.
(iii) nnn
This is a file serial number (between 2 and 999). If a file with the same name exists when accumulation of statistic
information starts up, a serial number is assigned. For example, if the iSM server is shut down and started up in
operation of one day, the serial number is assigned to accumulated statistic information from the second startup of the
iSM server, and the value increments by one. The serial number has the upper limit. If the number exceeds this
limit, accumulation of statistic information fails.
To avoid it, move the statistic information history files to the different directory at each shutdown of the iSM server,
or summarize/extract statistic information as required, delete the statistic information history files. Then, restart the
iSM server.
Chapter 1 Overview of Performance Monitoring Function
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ARRAY2
NEC Storage Series
Figure 1-9 Accumulating Statistic Information
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Business Servers
NEC Storage
PerformanceMonitor
Statistic Information
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History File
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