Hello,
A few months ago, I bought two 12TB disks to complement the two 8TB disks I already had in my DS920+
I immediately noticed that at least one of the new disks made a very high pitch sound from time to time. This was not correlated with disk beeing active meaning the NAS was not necessarily sending or receiving data when this noise appeared.
I did a HDDScan 4.1 Verify test of the disk and it came up with the following result:
I am not able to interpret the result fully. I do see there are no Bad sectors (?) but there are one with more than 500ms read time?
During a SMART test of both 12TB disks I did a small 10 sec video and you can hear a distinct difference in the noise created by the two disks.
Now what I’m wondering is if this is normal, or should I seek a replacement for the disk?
Please see the videos below:
Disk 1 noise:
Disk 2 noise: