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The Sample Bytes parameter in the Server.cfg file specifies the data cache size (in bytes) for data workbench.
The default value is 250e6. Instructions for opening and saving the Server.cfg file are the same as those for Log Processing Mode.cfg. See Log Processing Mode.cfg.
Because this file’s parameter affects system performance, please contact Adobe before making any changes.
You can further limit the size of the data cache for data workbench machine that connect to the data workbench server by setting the Maximum Sample Size parameter in the Insight.cfg file. For more information, see the Data Workbench User Guide.