Thank you so much for the reply.
I am still having some issues with the uploading. I have done some further troubleshooting and have some more info that hopefully may assist with getting this issue resolved.
It appears that large files will SYNC correctly if I use the windows app ownCloud to transfer the files with. If I use the latest version of Firefox or IE 11, the issue persists. I can easily upload small files 20mb or so but anything larger than around 600 MB is hit or miss.
Owncloud resides in its own ZFS drive , in fact, that's all the server ( FreeNAs 9.10 ) is currently doing, nothing more.
If the Owncloud plug in appears to successfully sync the large files on the same computer I am troubleshooting with ( uploading via the web browsers ) it leads me to believe it might be an issue with some sort of configuration on the web server itself? apache ? or owncloud specific settings?
I have also disabled the server side encryption and anti virus as well.
I have checked the logs and I do not see anything that's worth mentioning, unless I am looking at the wrong logs?
I see warnings like
\Files_Antivirus\BackgroundScanner::run, exception: The antivirus executable could not be found at \/usr\/bin\/clamscan","level":
which makes sort of sense as I have disabled the AV as well as encryption