Backup stuck at 280 GB / 1.6 TB (18%) copied

how long should I leave this [Deleted] like this.  its been hours for a 2.7gb file over the USB 3.0 segate 4tb 3.0 enclosure.  

  Also should I eject and retry the backup over?   I dont want to loose the 280gb that already transfered 

Maybe you should try contacting WD’s Technical Support about this. You can do so either by phone or email.

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