External Hard Drives Stressing

Discussion in 'OS X Yosemite (10.10)' started by menano, Oct 27, 2014.

  1. menano macrumors regular

    menano

    Joined:
    Jun 7, 2011
    Location:
    Neverland
    #1
    I have seen a post about this a while ago but I can't find it now, so sorry.

    Ever since I installed Yosemite, anytime my external hds are on, they are always spinning at extreme speeds, it's unusual and unsettling.

    Has this happened to anyone here? Any suggestions?
     
  2. say19 macrumors member

    Joined:
    Oct 19, 2014
    #2
    Presumably this isn't just Spotlight indexing?
     
  3. menano thread starter macrumors regular

    menano

    Joined:
    Jun 7, 2011
    Location:
    Neverland
    #3
    Its not because I've had them on for long enough to index everything! They are quite empty actually, unfortunately I lost all my data recently
     
  4. Drexus macrumors regular

    Drexus

    Joined:
    Oct 29, 2009
    Location:
    Ontario, Canada
    #4
    Are you referring to the actual disk RPM?

    Correct me if I'm wrong, but are you referring to disk activity?
     
  5. menano thread starter macrumors regular

    menano

    Joined:
    Jun 7, 2011
    Location:
    Neverland
    #5
    Yeah I mean the RPM! I can hear the literal disks spin so fast and they won't even slow down ever. I have to turn them of after I use them because I'm afraid they'll break
     
  6. Julien macrumors G3

    Julien

    Joined:
    Jun 30, 2007
    Location:
    Atlanta
    #6
    Relax, HDs only spin at one speed and don't spin faster than their design (usually 5200RPM or 7200RPM). They also have a MTBF ratings more than 300,000 hours (there is less than 9000 hours in a year). They are likely to last as long running 24/7/365 as they are cycling on and off.

    Go to System Preferences: Energy Saver and see if 'Put HD to sleep when possible' is checked.
     

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