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Appendix 2 Using the Enhanced Write Filter
Appendix 2-5 Disabling the EWF Function
Appendix-23
Appendix
Appendix
Appendix 2-5 Disabling the EWF Function
Display the command prompt screen, then input the following command to disable
the EWF function. The next time that the Unit is normally restarted or shut down,
the data that was emulated on the main memory will be reflected on the DOM.
After the Unit is normally restarted, the data on the DOM will be directly written.
Command: ewfmgr c: - commitanddisable
Execution example
Appendix 2-6 Precautions
•
When the EWF function is enabled, since the data written to the DOM is
emulated on the main memory, the system memory space will be reduced and
operation may become unstable when a large amount of data is written. To
prevent this problem, it is recommended that large amounts of data be written
to a memory other than the DOM, such as a memory card.
•
The writing lifetime per sector of the DOM on this Unit is 100,000 cycles. In
order to increase the reliability of the DOM, it is recommended that the Unit be
used with the EWF function enabled.
•
In the Industrial PC, the OS and RAS Utility store the event logs in the D: drive.
Consequently, the EWF function must be disabled with respect to the D: drive
in order to save the event logs even after the Industrial PC is restarted.
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