Rockwell Automation 1756-HIST2G Historian ME 2.1 - Manual (Page 125)

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If the Data Transfer service is in Auto Transfer mode after points have been created, it
may continue running. If Auto Transfer mode is not enabled, you must manually
select points to transfer and restart Data Transfer.
Viewing Data Transfer Statistics
The Data Transfer service records performance statistics that determine the
connection reliability. These statistics can be used to refine the settings in the
Configuration service.

Transfer Rate - number of retrieved events divided by the number of minutes
spent retrieving events sent to the FactoryTalk Historian SE.

Successful Attempt Rate - number of attempts to transfer data to the FactoryTalk
Historian SE per hour.
Archive File Time Span for ME-to-SE Data Transfer
When setting up the FactoryTalk Historian SE, the archive file time frame must cover
the archive time frame of the FactoryTalk Historian ME. For example, if FactoryTalk
Historian ME has been collecting data for the 07/01/2009 to 07/05/2009 time period,
the FactoryTalk Historian SE archive time period must also cover the 07/01/2009 to
07/05/2009 time period. Otherwise, event data will be discarded during Data Transfer
from the FactoryTalk Historian ME to the FactoryTalk Historian SE.