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Hard Disk Noise

I just got my order in from Newegg

1.5TB Caviar Greens WD15EADS 2X
Blax Duet Sata Dock

I hooked them both up and encrypted them both with Truecrypt Ext3... They seem to be working fine I copied a ton of data to both of them but they seem to both be making a low alternating murmur sound similar to this http://www.youtube.com/watch?v=n9obzgmWrlM

Its not overly loud and everything I read says this is a normal sound but what concerns me is it does it non stop even when I unplug the USB cable to the dock and just let them power up.... is it normal to have them making a sound when absolutely nothing is accessing them?


Edit: Just noticed this not far down the list http://www.tomshardware.com/forum/254460-32-hard-drive-noises but the only reply suggests the drives are bad.... this contradicts everything else I have read on the common noise but I still have yet to find anything about them making the noise non stop even when not accessed.


Edit2: Going to scan them with MHDD see what it turns up... wish I would have waited and go the Samsung EcoGreen F2 HD154UI... already have two of them and they are dead silent after initialization.
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  1. I am even more confused now... I did an MHDD scan on the entrie disk and it turns out 90%+ sectors respond in 3ms but now I just started to copy more files to it and this time I payed attention to it and it make virtually no sound while writing seriously what the hell how can a drive make more noise idle then while its active??????
  2. Best answer
    Your drives are exposed so it's normal they make more sound than drives inside a box or internal drives.
    The noise may also come from vibrations so you may want to check that.
  3. Mimoso said:
    Your drives are exposed so it's normal they make more sound than drives inside a box or internal drives.
    The noise may also come from vibrations so you may want to check that.


    Any idea why they would make almost no noise while active but I can hear a kind of alternating murmur while they are idle?
  4. Best answer selected by r_manic.
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