Editing the Registry to Change the Buffer Size

Procedure

  1. Select Run from the Start menu.
    The Run dialog box appears.
  2. Type Regedit and press Enter.
    The Registry Editor appears.
  3. Locate the ComputerName_OPC1 key, where ComputerName is the name of your computer. You can find this key here:
    HKEY_LOCAL_MACHINE\SOFTWARE\Intellution,Inc.\Historian\Services\OPCCollector\ComputerName_OPC1
  4. Add a new DWORD value. Enter the name MinimumDiskFreeBufferSize, select the decimal option, and set the value to a small number such as 10 or 20. The value that you enter represents the number of MB of buffer space needed.
  5. Start the collector.
  6. If the Collector does not connect to the Historian Server, check the log file in the logfiles folder on the collector computer. If the log states that Historian "could not create buffer files" then repeat steps 1-5, this time using a smaller number.
  7. Once the Collector connects to the Historian Server, the collector should appear in the Admin UI and you can readjust the buffer file size on the bottom of the collector ?s General tab.