Backup to External USB - "exceeds defined maximum file size"

[seh2000]

Hi,

I am new to QNAP and to this forum so bear with me.
I got a TS-269 Pro a short time back, having 2 * 4TB Seagate drives in RADI 1 and I am on Firmware version 4.0.7, here my "issue":

To try out the backup function to external drive I connected a USB drive to one of the rear USB 3.0 ports.
Created a set of backup jobs (4), started a backup, when completed I saw the following error message for two files:

Warning: The file "nn/nn/nn.nnn" exceeds the implementation defined maximum file size of the destination side! This file will be skipped

I cannot understand as I used same USB drive as a backup for my old NAS, the two files are 8.29GB and 4.64GB I have copied the same two files to the same USB drive using Windows Explorer and MAC Finder without any problem.

Suggestions?

[SCOPEZ]

Hello,

I'm new too and I've the same problem.
I'm a french user and the only topic I found on google about this error code is this one.
Did you fix your problem ?

In my case the file which is problematic is a .pst (outlook data file) and it's size is 8 766 073ko.
In the same backup I've another .pst file of 3 258 489ko and there is no problem whit it.

[doktornotor]

How are the external drives formatted?

[SCOPEZ]

Hello.

Problem solved for me.
My external drive was in FAT32 ==> maximum size for one file = 5Gb
I've formatted it in NTFS, restart my backup and now it works because NTFS format alow very big file.

Thanks.

[Giacopis]

My USB device is NTFS formatted, but I still get the message.