Note
The "Process Historian" and "Information Server" components can be installed on a computer.
The new Process Historian (PH) with reporting system has been introduced in parallel with the
Central Archive Server (CAS) archiving system as part of the introduction of SIMATIC PCS 7
V8.0. From SIMATIC PCS 7 V8.1 onwards, the CAS is no longer supported.
Note
A migration of the CAS/StoragePlus data from the PCS 7 versions greater than V7.0 to PH
data is possible in the PH version from PCS 7 V8.1 onwards.
How the Process Historian and Information Server work
All OS servers and OS single stations for which there is a Process Historian (PH) configured
in the PCS 7 project swap out your alarms to the PH in runtime. In addition all OS archive tags
identified as "Long-term archiving" are archived on the PH for runtime.
Configuring OS functions
10.4 Archiving
Compendium Part A - Configuration Guidelines (V8.2)
258 Configuration Manual, 08/2016, A5E38166869-AA
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