Drive sleep vs MTBF.

Discussion in 'Mac Pro' started by grue, Oct 5, 2008.

  1. grue macrumors 65816

    Nov 14, 2003
    Sort of a noobish question, but are there any actual data regarding sleeping the HDDs vs running them whenever the machine is on, and the effect of this on the lifespan of the drives?
  2. nanofrog macrumors G4

    May 6, 2008
    Sleep won't be a problem, unless RAID is involved.
    RAID doesn't just kill bugs dead, but HDD's too. Particularly consumer drives. :p
  3. phoobo macrumors regular

    Sep 13, 2008
    Yes - sleep mode lengthens a drive's life

    It sounds like you might not know about this site, from one of your countrymen, which is the single best source for answers to questions like this on the entire Net - and I mean the very best.

    Here, he deals with that very question:

    here's the relevant passage from that article:

    No spin down is a slow, but sure, kiss of death for consumer drives. They can last a long time if they spend most of their life in sleep mode - which they will, in many network storage situations. If their controller lets them spin down.

    Keep a cheap drive spinning all day, and you not only waste watts and add more noise to your life, but should also expect the drive to fail in a couple of years, if not sooner. It may still last for ages, but that's not the way to bet.


    Not only true of cheap drives.

    This guy should be known down there as a national treasure. Better than anything we in the US have to offer.


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