The WD mycloud app isn’t acceptable IMO as previously stated it doesn’t preserve timestamp information. I wonder why when implementing this feature they didn’t include what seemly useful information with performing a backup.
This solution would have been the ideal way without voiding my warrenty as I’m only connected via Wifi to the box and get like 5-10mb/s.
To be honest with you I did not notice any difference using SSH or windows machine or a laptop. SSH has no advantage IMHO.
Copying 8.5 G from PC to a drive connected to mycloud (external drive <->mycloud) using mycloud app took 5 minutes. Over Wifi, using wd app, took 5 minutes as well. Both direction reading/writing.
Is your drive a self contained USB 2 drive? as some mentioned above some drives probably have problems.
I shoved a SATA 2 drive (really old MDT brand) into a USB 3.0 docking station and connected that to mycloud and I get brilliant results 38 MB/s both directions using WD app.
For Wifi, you really need a good signal to get fast transfer speed. i use Wireless N like everyone these days (29MB/s).
If your drive is self contained USB drive then it could be comaptiblity (on either side or both). For exampel the same drive (docking station 3.0) I am using does not work with my router which has USB 2.0.
Are you doing select all to copy files or using the drop down menu and choosing copy (the 3 bars options next to the folder). But not sure if it makes any difference.