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I've watched a few youtube videos demonstrating the so called click of death and they all show a hard drive that 'clicks' nonstop. My hard drive will occasionally make a clicking sound, but it happens sporadically and it's usually just one click. Does this indicate imminent failure as well?

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3 Answers 3

up vote 4 down vote accepted

No, some HDDs click. This however does not mean that you should not have any backup.

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5  
+1 for backup. Should have it whether or not your HDD is making noises. –  Adam Ryan Nov 2 '09 at 23:16
    
Occasional clicks are thermal recalibration routines and not to be worried about. –  Fiasco Labs May 20 '12 at 1:31

I do not think so.

My thoughts are more on entering some power save mode. Some disks (e.g. my old 2.5" HD) have click-like sound when stopping spindle in order to save power.

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The clicking you hear may be the read head of the HD going back to it's resting position. This is most easily demonstrated with recent MacBook laptops because they have a feature where if the computer detects a sudden change in acceleration (like if you dropped it) it will move the HD's read head off the platters into a safe position to prevent a subsequent impact from causing the read head to touch the platters and possibly damaging the disk. So, when you jostle or shake your MacBook, you will often hear a single click from the hard drive quickly moving the head to a safe position.

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