Stranges Noises At Night

Discussion in 'Mac Pro' started by robemich, Feb 14, 2007.

  1. robemich macrumors member

    Joined:
    Feb 14, 2007
    #1
    When sleeping, my mac pro makes funny noises. I have not had a chance to time the spacing in between the noises, but if I had to guess they occur during regular intervals.

    It is really hard to describe the noises, so I will do my best. It almost sounds like when you hit the power button and the machine begins to power up. You hear a click, followed by what sounds like hard drive spin-up, then the sound fades out. I only notice these noises when the machine is sleeping and my house if very quite. I am really curious to know if this is normal.

    Sorry for the n00b question, I am a new convert.

    -mike
     
  2. synth3tik macrumors 68040

    synth3tik

    Joined:
    Oct 11, 2006
    Location:
    Minneapolis, MN
    #2
    Most likely there is an application or script that is accessing the hard drive, Say a back up program or something. Usually mine is pretty good, but every so often it will wake up from sleep when a program is accessing the hard drive or other recourses.
     
  3. robemich thread starter macrumors member

    Joined:
    Feb 14, 2007
    #3
    Thanks

    This is good information to know. Thanks for the quick reply.

    -mike
     
  4. anthony113 macrumors member

    Joined:
    May 24, 2005
    #4
    osx runs cron jobs when the computer isnt being used, typically at night. these are basically maintenance functions that help things stay speedy. you can run them manually if you choose using a 3rd party tuning application, but the system tends to keep after itself.
     
  5. CubeHacker macrumors 65816

    CubeHacker

    Joined:
    Apr 22, 2003
    #5
    Its quite possible that your hard drive is constantly spinning up and down, which can be damaging. Check the energy saver panel under preferences, and uncheck the "spin down hard disk" option. See if that makes the odd noises go away.
     
  6. robemich thread starter macrumors member

    Joined:
    Feb 14, 2007
    #6
    Many Thanks

    Thanks to everyone that replied. I am going to search through logs and try to correlate the noise to something in the logs based on the time that it occurs. Hopefully that might point me to a specific task that is running, and hopefully a task that I can disable. I will let you all know my results.

    -mike
     
  7. crjeong macrumors member

    Joined:
    Aug 29, 2006
    Location:
    Sydney, Australia
    #7
    I've been getting the same problems with my Mac Pro also. Have you figured out what the cause is yet?

    I thought it might have had something to so with some software I might have installed, because I cant recall this happening when I first got the computer. Perhaps DejaVu?
     
  8. CanadaRAM macrumors G5

    CanadaRAM

    Joined:
    Oct 11, 2004
    Location:
    On the Left Coast - Victoria BC Canada
    #8
    I don't think it is a problem. OSX automatic maintenance, Spotlight indexing, etc. possibly.
     
  9. crjeong macrumors member

    Joined:
    Aug 29, 2006
    Location:
    Sydney, Australia
    #9
    Does this occur on your computer also??
     
  10. TheNightPhoenix macrumors 6502

    Joined:
    Dec 16, 2005
    #10
    This happens with my iMac. Its increadably annoying.
    I checked and the hard disks are set NOT to go to sleep, but at every 5 minutes or so it spins up for a few minutes before spinning down again.

    I ended up settings itunes to play music with the speakers on mute to stop it.
     
  11. robemich thread starter macrumors member

    Joined:
    Feb 14, 2007
    #11
    This is getting interesting

    Like you all have suggested, I went into my energy saver settings, and unchecked the box for spin down (put them to sleep) hard drive(s) when possible. The noise still occurs. As far as I can tell, the drives are still spinning down when the machine sleeps, despite unchecking the box. I have not been able to pin-point the spin up to a certain task or OS maintenance item, and I am not really worried about finding out what the cause is. I just want the drives to spin constantly.

    I am fearful that the process of spinning up and down the drives every couple minutes is going to have some long term effect on the life expectancy.

    Should I open a case with Apple?

    -mike
     
  12. slughead macrumors 68030

    slughead

    Joined:
    Apr 28, 2004
    #12
    probably the x1900xt

    mine spins up occasionally at night
     
  13. synth3tik macrumors 68040

    synth3tik

    Joined:
    Oct 11, 2006
    Location:
    Minneapolis, MN
    #13
    Your computer is performing routine maintenance. This is way its a good idea to leave the computer on. when its not in use it will go through doing file indexing, and the what like. Its kind of like it is going through it's own self calibration. :D
     
  14. robemich thread starter macrumors member

    Joined:
    Feb 14, 2007
    #14
    I will leave well enough alone then. I understand the routine OS level maintenance. I was just concerned about my drives. Thanks to everyone that replied.

    -mike
     
  15. synth3tik macrumors 68040

    synth3tik

    Joined:
    Oct 11, 2006
    Location:
    Minneapolis, MN
    #15
    I know what you mean, The first time I noticed it I was alarmed almost as much as when I noticed my QS "breathing" during sleep mode.
     
  16. SRSound macrumors 6502

    Joined:
    Jun 7, 2005
    #16
    i think there's really only one explanation - your computer is haunted
     

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