I have been using this D-Link DNS-327L for almost a year. I am using two 2TB hard disk without RAID and file system is EXT4.
There are Disk 1 and Disk 2. Disk 1 is used until 80% for backups of my computer files while Disk 2 is used until 60% for storage of my video files.
Last month when I tried to copy the video files from Disk 2, the copy speed dropped to 0 kbps after few seconds and unable to copy anymore.
Then I test copy other video files, most of the files facing similar dropped copy speed but are able to resume copying with extremely low copy speed.
However about 10% of my video files are unable to proceed copying.
I thought it might be my hard disk failing so I got myself a new 3TB hard disk to replace my Disk 2. I rescued whatever video files I have then put back to this new hard disk.
I did not test with Disk 1 as I have very little video files there.
One month has past and yesterday I faced the same issue when I copy some video files from my Disk 1.
Now I think it might not be the hard disk problem. Can any expert here advise and help me please?