Two identical HDs and two different sounds?

[JimmyNeutron]

Hi,
Computer 1: Intel D975BX2 - using 2 WD5001ABYS SATA hard drive in non-raid mode
Computer 2: Asus Rampage - using 2 WD5001ABYS SATA hard drive in Raid1 mode

When transferring data from Comp#1 to Compu#2 via ethernet, I can hear the hard drives in #1 pretty loud. Well, loud compare to the two WD5001ABYS hard drives in Comp#2.

All four have the same manufacturing date of Feb 25, 2008. Is this normal?

Thanks!

 

[thebeephaha]

Are the drives in the same case? Are they mounted the same way?

I'm going to go on a limb and say its your environment making the drastic difference. However my Seagate drives don't all sound alike. I wouldn't worry unless you are experiencing more apparent issues or if the sound is not only louder but abnormal.

 

[JimmyNeutron]

They are in different cases and all are mounted horizontally. I'll do a surface scan just to make sure there are no bad sectors.

Thanks!