Rockwell Automation FactoryTalk Historian SE DataLink 4.2 User Guide - Manual (Page 92)

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FactoryTalk Historian DataLink User Guide
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High Availability Connection Preferences
The connection preference is set at the time of the first connection.
For FactoryTalk Historian DataLink 3.1.6 and above, the connection
preference for DataLink functions is set to Any. However, since the
connection preference is set at the time of the connection, the order in
which the connection is made matters. If the first connection is made with
DataLink functions, then it makes a connection with connection preference
of Any. If the first connection is made with the trend control, tag search, or
the connection manager, then the connection preference is set to Prefer
Primary.
See "Default Connection Preferences" in the FT Historian SE High
Availability Administrator Guide for an explanation of connectivity
preferences.
FactoryTalk Historian Server Connectivity
Client computers running Microsoft Excel and FactoryTalk Historian
DataLink can retrieve data from FactoryTalk Historian 3 servers.
For more information on FactoryTalk Historian server connectivity and
security, consult your FactoryTalk Historian server documentation, or
download documentation from the Rockwell Automation technical support
site (http://techsupport.osisoft.com/downloadcenter.aspx).
Firewall Database
The firewall database on a FactoryTalk Historian server machine must be
configured to allow access from client computers running FactoryTalk
Historian DataLink. For example,
PIConfig> @table pi_gen,pifirewall PIConfig> @ostr
hostmask,value PIConfig> @select hostmask=* PIconfig> @ends
*.*.*.*, ALLOW
blocks no IP ranges, indicating that all client machines may connect to
FactoryTalk Historian 3 server. In contrast,