I am syncing from my HDD to a USB HDD using a USB 3.0 port. I'm creating a mirror backup on the USB drive.
FFS reports copy speeds around 25MB/s +-.
Copying the same files using File Explorer records speeds about 90 MB/s
I'm copying the same files using the same port. Why is there such a dramatic difference between copy methods?
Copy is Slow
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By default, FFS uses "Fail-safe file copy" (FFS GUI / Tools / Options / (left-top) ).
This creates and overhead that may slow down copying, particularly when copying mostly smaller files.
But if something goes wrong during copying, you will at least still have the initial, to-be-overwritten version.
Setting the VerifyCopiedFiles flag to True (default=False) will slow down copying even more.
This creates and overhead that may slow down copying, particularly when copying mostly smaller files.
But if something goes wrong during copying, you will at least still have the initial, to-be-overwritten version.
Setting the VerifyCopiedFiles flag to True (default=False) will slow down copying even more.
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Are you sure it's the same files also? Sometimes FFS will transfer in a different order than Explorer.
