Transfer successful. File corrupted.

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mtesa · #1 Post by **mtesa** » 2023-09-05 11:55

While transferring files over 150GB to an FTP site, I got message that transfer is complete.
several co-workers downloaded the file and the file was corrupt.

Is there a way to diagnose where the problem originated?

regards!

#2 Post by **botg** » 2023-09-05 14:08

Are you using plain insecure FTP, or are you using FTP over TLS?

#3 Post by **boco** » 2023-09-05 16:18

Another thing to check: Is the file binary, and does it have no extension or start with a dot? If yes, such files are by default treated as being ASCII, you need to remove the according checkmarks in the setting to transfer them as binary files.

mtesa · #4 Post by **mtesa** » 2023-09-06 07:13

@botg
plain insecure ...

@boco
it's a huge video file in MKV format..

Thank you guys...

#5 Post by **botg** » 2023-09-06 09:22

With plain FTP there is always a chance for random corruption. Any data packet can get corrupted, and there is a small chance corruption goes undetected.

Use FTP over TLS to protect against corrupt data packets.

mtesa · #6 Post by **mtesa** » 2023-09-07 09:41

@botg

OK. Will try.

Thank you

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