How safe is to leave Mac running all the time?

Discussion in 'General Mac Discussion' started by boneca, Jan 26, 2005.

  1. boneca macrumors 6502

    Joined:
    Jan 2, 2005
    Location:
    Boston, MA
    #1
    The topic says it all. I usually keep my computer running always unless I have to restart it.

    TAIA
     
  2. rhpenguin macrumors 6502a

    rhpenguin

    Joined:
    Jun 10, 2003
    Location:
    London, Ontario
    #2
    Its completely okay.. Actually its better for the hardware to constantly be running (HDD aside). When you turn your machine on and off the parts inside heat and contract causing wear and tear and can cause premature failure.

    The hdd constantly spinning can cause it to die quicker because of its moving parts, but thats what power management is for :)
     
  3. Hodapp macrumors 6502a

    Hodapp

    Joined:
    Jul 10, 2003
    Location:
    New York, NY
    #3
    I've been doing this with all of my computers for years. The only time I ever reboot my Mac is when security updates require it. The only thing you have to worry about is that if you live/work in a dusty environment where the computer is you'll need to blow it out with some airduster every once in a while so you don't burnt out any of the fans from dust buildup. :)
     
  4. Lacero macrumors 604

    Lacero

    Joined:
    Jan 20, 2005
    #4
    I don't think leaving it on or turning it off makes any appreciable difference as to the components lasting longer. The only safe bet is you run up your energy bill.

    If you are talking about being on a DSL or cable modem line, OSX and Macs are generally safe to be left on, if you have the firewall in OSX and on your router enabled. Sleeping Macs are safe.
     
  5. virividox macrumors 601

    virividox

    Joined:
    Aug 19, 2003
    Location:
    Manila - Nottingham - Philadelphia - Santa Barbar
    #5
    shouldnt be a problem, i keep my laptop on all the time i just set it to kill the display after inactivity
     
  6. heaven macrumors 6502a

    heaven

    Joined:
    Jun 20, 2004
    #6
    I always put my powerbook asleep when I dont use it, so it runs 24/7... Didn't notice any problems so far.

    Enjoy your Mac [​IMG]
     
  7. Apple Hobo macrumors 6502a

    Apple Hobo

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    Mar 19, 2004
    Location:
    A series of tubes
    #7
    OS X also runs the daily/weekly/monthly cron scripts between 3:15-5:30 AM, so leaving your machine on 24/7 allows the OS to keep itself tidy.
     
  8. JzzTrump22 macrumors 65816

    Joined:
    Apr 13, 2004
    Location:
    New York
    #8
    My computer is usually on 24/7. I shut it down for a short period of time once in a while.
     
  9. KCK macrumors regular

    Joined:
    Jul 31, 2003
    Location:
    Oakland, CA
    #9
    Add another person to the list who leaves his computer on 24/7. My record for my old Quicksilver G4 is 125 days between rebooting ( yes I delayed installing a couple of security updates).
     
  10. heaven macrumors 6502a

    heaven

    Joined:
    Jun 20, 2004
    #10
    To run them all when you want it to, type this in the terminal: sudo periodic daily weekly monthly
    Type in your password and wait until it finishes!

    Enjoy! [​IMG]
     
  11. hughdogg macrumors member

    Joined:
    Sep 8, 2003
    Location:
    Springfield, MA - Birthplace of Basketball
    #11
    Sleeping and Scripts?

    If the machine is sleeping, does it still run these scripts?

    Thanks,
    hughdogg
     
  12. heaven macrumors 6502a

    heaven

    Joined:
    Jun 20, 2004
    #12
    No, but you can also use them manually... see my previous post

    More Info:

    Periodic system maintenance is scheduled by 'cron' (see Week 33). Cron launches a program called 'periodic' which is responsible for launching the maintenance scripts.

    % cat /etc/crontab
    ...
    #minute hour mday month wday who command
    # Run daily/weekly/monthly jobs.
    15 3 * * * root periodic daily
    30 4 * * 6 root periodic weekly
    30 5 1 * * root periodic monthly
    ...

    The daily script is run at 3:15 am.
    The weekly script is run at 4:30 am Saturday.
    The monthly script is run at 5:30 am on the first of each month.

    Your Mac must be running (not sleeping) for these scripts to be run.

    The output from these scripts can be found in:
    % ls /var/log/*.out
    /var/log/daily.out /var/log/monthly.out /var/log/weekly.out
     
  13. maya macrumors 68040

    maya

    Joined:
    Oct 7, 2004
    Location:
    somewhere between here and there.
    #13
    Unless a software requires it, or a software or system update.

    Other than that its running 24/7, have never gotten any system crashes yet *knock on wood* :)
     
  14. Peyote macrumors 6502a

    Peyote

    Joined:
    Apr 11, 2002
    #14
    Leaving your Mac on 24/7 won't be a problem as long as you follow these three rules:





    1) Never expose it to too much light.

    2) Never get it wet. If you do, clones made by eMachines will appear.

    3) Never, Never feed it after midnight. If you do, it will turn into a Dell.
     
  15. auxplage macrumors 6502

    Joined:
    Nov 11, 2004
    Location:
    Virginia Beach
    #15
    If 'cron jobs' are not run is it a bad thing overtime, in the short run, or both?
     
  16. Kmacripple macrumors member

    Joined:
    Jan 20, 2005
    Location:
    Topeka, IN (aka Amish country)
    #16
    That made me laugh. :D
     
  17. maxterpiece macrumors 6502a

    maxterpiece

    Joined:
    Mar 5, 2003
    #17
    If i'm gonna be gone for more than 1/2 hour i sleep it. If I'm gonna be gone for more than 24 hours then I turn it off (if i remember). There's a HUGE difference in power consumption when you compare a sleeping computer with a powered on computer... and when you are starting a computer up it will use like 10x as much power as when it is fully powered on and just doing light work and like 100x as much as when it is asleep... just that 1 minute of startup time is like 2 hours of sleep time. Not to mention the hassle of waiting for the computer to boot and reopening your applications.
     
  18. clayj macrumors 604

    clayj

    Joined:
    Jan 14, 2005
    Location:
    visiting from downstream
    #18
    Is that midnight EST, or midnight Pacific time, or midnight Greenwich time? And it's always "after midnight"... it might be 23 hours and 59 minutes after midnight. ;)
     
  19. Peyote macrumors 6502a

    Peyote

    Joined:
    Apr 11, 2002
    #19

    does that mean you always "let it all hang out"? Since it's always after midnight?
     
  20. clayj macrumors 604

    clayj

    Joined:
    Jan 14, 2005
    Location:
    visiting from downstream
    #20
    Actually, it's "hang down":

    "After Midnight" lyrics

    And no, I'm not gonna do that... they're your rules, after all. :)
     
  21. dvdh macrumors 6502

    dvdh

    Joined:
    Apr 6, 2004
    #21
    Or if you are worried about messing around in the console, you an download an app like Onyx to give a GUI interface for running your maintenance scripts. You should be able to find in on MacUpdate.com
     
  22. Jigglelicious macrumors 6502

    Jigglelicious

    Joined:
    Apr 25, 2004
    Location:
    NYC
    #22
    Actually, you're wrong on that point. The HDD suffers the most stress from being powered on/spinning up. Constant spinning up/down can cause premature failure but usually just causes the drive to "whine" after a while. Like the rest of the computer, its best to leave it running 24/7, including the hard drive :)
     
  23. Peyote macrumors 6502a

    Peyote

    Joined:
    Apr 11, 2002
    #23

    Actually they're the old Chinese dude's rules, applied to the context of Apple hardware, in a humerous manner. Thereby turning a pop culture reference into geeky Apple joke. :p
     
  24. Deefuzz macrumors 6502a

    Deefuzz

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    Jan 27, 2004
    Location:
    St. Louis, MO
    #24
    LOL, NICE! well done :)
     

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