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Global Status History data
7.6 History data
History data is system data which has been collected over a lengthy period. For this purpo-
se a Performance Monitor constantly runs in CentricStor. The Performance Monitor collects
and stores the operating data of the components, e.g. performance, mount, availability of
the devices and the device assignment, at intervals of a few seconds. The customer service
can determine the files system and period in which measured data is to be saved.
● Global Extended Control Center (GXCC) is a program which supplies a graphical map
of a CentricStor system.
● The GXCC component Global-Status-Monitor (GLOBSTAT) evaluates the measured per-
formance data and presents the current values.
● The GXCC component Global History Viewer (GLOBHIST) is used to present the chro-
nological progress.
The following options are therefore available for the history data of a CentricStor system:
– The data can be displayed graphically using the GLOBHIST program.
600 pixels are available for a line graph. In a presentation period of one hour the pixel
corresponds to 6 seconds; in a week, it corresponds to approx. 1000 seconds. The
stored measured values from this period are evaluated and displayed in accordance
with the specification (Min, Max, Average). If no measured value occurs in the period,
zeros are entered. 0 values therefore occur for periods in which CentricStor was not ac-
tive. When the presentations for a period of 1 hour are interpreted, it must be borne in
mind that only 0 - 2 measured values apply for a pixel. It is therefore normal if there is
sometimes no difference between Min, Max and Average in this presentation and if lines
occasionally yield “0”.
– The data can be exported from the GLOBHIST program into a file as text.
– The data can be extracted from the binary recording files on the CentricStor system
using a shell script and be stored in a text file.
When the data is available in a file, this file can then be transferred to another system and
be presented with an evaluation program or integrated into customer-specific controlling
processes. A macro is supplied for the Microsoft program Excel which generates a presen-
tation which is suitable for GXCC.
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