Reading Disk Space Information - Siemens SIMATIC PCS 7 OSx Operator's Manual

4.3

Reading Disk Space Information

SIMATIC PCS 7 OSx 4.1.2 Operator
Disk space can be determined in the following ways for all trend groups and
for the currently displayed trend:
• Maximum (worst case) amount of disk space available for historical
trend data. This serves as a checkpoint between the actual disk usage
for a particular group and the total amount of disk space available for
historical trend data.
• Actual amount of disk space used to store historical trend data.
• Amount of free disk space available to store historical trend data.
Always refer to the
to ensure that disk space for that trend is available.
To calculate disk space usage, select the
Trend Configuration screen
Figure 4-7 Trend Disk Space Usage Display
field when configuring historical trends
Free Space
Calculate Space...
(Figure 4-7).
pushbutton on the
4-11
Trends