File Copy issue

[Project86]

Cross posting this here, as the sections on this forum are not very well defined.

I am in the process of copying files from a 4TB external drive, which is USB powered (not that it probably matters, but trying to be specific). I will copy several directories full of files (anywhere from a few dozen GB to several hundred) without issue. I am doing this on my 1 month old AS6404t with brand new WD Red drives in it. I use ADM "File Explorer" as it is simple and efficient for this one-time procedure.

But then once in a while, seemingly at random, I am getting an error that says "Unable to copy or move files/folders (Ref.5019)". Everything stops at that point. I can try again, sometimes it will work without issue, sometimes I get the error again.

I don't think this external drive has issues, as I have copied the same contents multiple times to other drives without issue. Also I am merely reading from it, not writing, so that should be simple enough.

Anyone know what the Ref5019 copy error means?

[sksbir]

Hi
I see three potential sources for problems like yours:

1/ disks in NAS are not in HCL. Take a look here to validate that your disks are listed : https://www.asustor.com/service/hd?id=hd&lan=en

2/ filenames and/or directory names are too long, especially if the target shared folder on the NAS is encrypted. ( I think, limitation is about 140 characters ).

3/ file/directory names with accents or other special characters could be a problem.

[Project86]

Thank you for the reply. To address each point:

1) My drives are on the list.

2) This is a good idea, though later attempts to copy the same files work just fine.... so I'm not sure if it can be related or not.

3) Same as above.

[sksbir]

ok
then try an other way , eg copying from shell command. If it fails, you may get a more meaningful message. If not, then you will have proven that it comes from the graphical interface and the copy command that is used by it.