Error while copying file to a network share

Dear Members,

While trying to copy a file to a NAS the following occurs for a file ~100GB, the error "could not find this item. This is no longer located in <MappedDrive>. Verify the items location and try again".

Another error while transferring to same file to same folder via FTP:

"Could not write to transfer socket: ECONNRESET - Connection reset by peer. Connection timed out"  This error might occur more than once occasionally.

Furthermore, if these two items get started errors occur nearly at the same time.

Could you please help me in identifying and resolving this error.

Thanks and regards,
Oner
oner_hamaliAsked:
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Davis McCarnConnect With a Mentor OwnerCommented:
Get a copy of PingPlotter Free ( very bottom of http://www.pingplotter.com/download.html )
Point it to the IP of your host server and set the time to 2.5 seconds, then let it run for a while.  I'll bet you have a system in one of the hops with significant packet loss (PL column) which is causing your disconnects.
My other thought is that some ISP's now throttle bandwidth and/or break the connection if they think it is P2P filesharing.
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helpfinderIT ConsultantCommented:
what if you try to do the same with smaller file?
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oner_hamaliAuthor Commented:
No problem occurs with a 40GB file
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Aaron TomoskySD-WAN SimplifiedCommented:
Got another ~100gb file? Maybe the problem is with that file
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Davis McCarnOwnerCommented:
What is the make and model of the NAS?
Does it have and admin page so you can inspect the health of the drive(s)?
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ArneLoviusCommented:
Just to add to the replies from aarontomosky and DavisMcCarn

To check that the file is not the issue, I would suggest trying to copy the file locally.

Is the client computer and the NAS on the same LAN ?

Is there a firewall between the client computer and the NAS ?
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oner_hamaliAuthor Commented:
aarontomosky: Same error was observed with files of various sizes. Error occurs intermittently.

DavisMcCarn: The error occurs on a hosted computer and access to NAS information is not probable.

ArneLovius: Client computer and the NAS reside on WAN, and a firewall exists between these devices.

Thanks and Regards.
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ArneLoviusCommented:
in which case, I would guess a NAT translation timeout.

you could test this by retrying with your 40GB files over FTP, but artificially reducing the transfer speed with your FTP client.
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Aaron TomoskySD-WAN SimplifiedCommented:
Another vote for it being time thing not a file size thing.
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oner_hamaliAuthor Commented:
This has not occurred from an FTP with 4 KB/s transfer rate for an 1:30, whereas the same error occured on a file copy over network share during this time.
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ArneLoviusConnect With a Mentor Commented:
FTP and SMB could have different timeouts.

Can you conmfirm that make, model and firmware version of the NAS.
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oner_hamaliAuthor Commented:
Thanks to all for their help, this issue has to be closed since service will be stopped.
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