Readback Options

Allows you to set the following options:

Field	Description
Readback Values	Immediately read back samples after they are written. This verifies that the migration was successful. All samples that were written, including bad data quality and shutdown markers, are read back. Important: Selecting the Readback Values option puts additional load on the archiver and can slow the migration process. If samples are not found during the readback, the Migration Utility sends a message to the migration log file (\dynamics\local\ifix2ihmigration.log). It does not stop the migration.
Write Values to Server	The data writes and tag adds are written to the Archiver. If you want to perform a readback-only migration, clear this option and select the Readback Values option. This allows you to select a specific Classic historical file and perform a readback to confirm that all samples in the Classic file exist in Historian. If samples are not found during the readback, the Migration Utility sends a message to the migration log file (\dynamics\local\ifix2ihmigration.log). It does not stop the migration.

Field

Description

Readback Values

Immediately read back samples after they are written. This verifies that the migration was successful. All samples that were written, including bad data quality and shutdown markers, are read back.

Important: Selecting the Readback Values option puts additional load on the archiver and can slow the migration process.

If samples are not found during the readback, the Migration Utility sends a message to the migration log file (\dynamics\local\ifix2ihmigration.log). It does not stop the migration.

Write Values to Server

The data writes and tag adds are written to the Archiver.

If you want to perform a readback-only migration, clear this option and select the Readback Values option. This allows you to select a specific Classic historical file and perform a readback to confirm that all samples in the Classic file exist in Historian. If samples are not found during the readback, the Migration Utility sends a message to the migration log file (\dynamics\local\ifix2ihmigration.log). It does not stop the migration.