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10.5.2 doesn't like disks to sleep?
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Professional Poster
Join Date: Mar 2000
Location: New York, NY, USA
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Seem to have found something new in 10.5.2: My Time Machine drive is an external FW800 drive which I have set to spin down whenever possible. After installing 10.5.2 it seems to be awoken every 20 minutes or so, which is, obviously, unnecessary. Is anyone else seeing this, or is my copy of 10.5.2 just lonely?
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Last edited by Don Pickett; Feb 21, 2008 at 02:18 AM.
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The era of anthropomorphizing hardware is over.
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Moderator  Join Date: Jan 2001
Location: Polwaristan
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If you are willing to watch Activity Monitor at around the time the drive should spin up again, you could watch it for new or more-active processes (sort by CPU), which may show you what process may be trying to access the drive.
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Professional Poster
Join Date: Mar 2000
Location: New York, NY, USA
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Restarted, with no apps running, and let the machine sit there. The drive went to sleep, then was awoken. Sat there with Activity Monitor running and only saw a slight spike in mds. I think it's definitely something Apple changed with 10.5.2.
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The era of anthropomorphizing hardware is over.
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Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
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My backup drive sleeps, but I am not running Time Machine currently. I bet it's a Time Machine issue.
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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Professional Poster
Join Date: Mar 2000
Location: New York, NY, USA
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Originally Posted by Big Mac 
My backup drive sleeps, but I am not running Time Machine currently. I bet it's a Time Machine issue.
Good for you! 
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The era of anthropomorphizing hardware is over.
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Posting Junkie
Join Date: Feb 2005
Location: 888500128
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My external drives wake up every once in a while - and always when I enter the password upon quitting the screen saver after an idle period.
I do not have Time Machine configured at all.
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Professional Poster
Join Date: Mar 2000
Location: New York, NY, USA
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Originally Posted by analogika
My external drives wake up every once in a while - and always when I enter the password upon quitting the screen saver after an idle period.
I do not have Time Machine configured at all.
Poking around the Apple discussion boards, it seems 10.5.2 has introduced several sleep issues.
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The era of anthropomorphizing hardware is over.
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Dedicated MacNNer
Join Date: Jun 2005
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I have Time Machine active, & my Mac goes to sleep fine. I do hear the EHDD wake-up on the hour for TM sync but my Mac stays asleep all through .... I didn't set for my EHDD to sleep it does this automatically!
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Posting Junkie
Join Date: Feb 2005
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I don't see this as an "issue" at all, and my Mac sleeps just fine.
It's merely the external drives spinning back up every once in a while when the Mac is awake and in use...
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Moderator  Join Date: May 2001
Location: Hilbert space
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I don't think it's a Time Machine issue, MacOS X wakes up my external FireWire drive (which I don't use for Time Machine backups, I have another disk for that) for all sorts of other reasons: certain dialogs seem to trigger this at times (e. g. open/save, password dialogs).
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I don't suffer from insanity, I enjoy every minute of it.
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Professional Poster
Join Date: Mar 2000
Location: New York, NY, USA
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Originally Posted by analogika
I don't see this as an "issue" at all, and my Mac sleeps just fine.
It's merely the external drives spinning back up every once in a while when the Mac is awake and in use...
The only thing that drive is used for is Time Machine. There's no reason for it to wake up otherwise.
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The era of anthropomorphizing hardware is over.
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Professional Poster
Join Date: Jan 2002
Location: London, UK
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Although you are using the drive for TM, it doesn't mean that it isn't possible to use it for anything else. Therefore, if you e.g. open a save dialogue, the OS will spin it up as a potential target location for the save.
Currently (and probably never) it isn't to possible to tell the OS that your drive is only a TM drive.
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