Power Nap and Late 09 iMac

Question

Level 1

17 points

Power Nap and Late 09 iMac

Hi,

I am confused atm. I was told that only computers with SDD and being the latest models support power nap on ML however I have noticed that ever since updating my iMac apprears to wake all the connected HDDs up at inverals of 2 hours to start a TM backup. This has become quite annoying as it does it at night when asleep and at times wake me up.

It can't be Power nap but it seems to act like it and I cannot turn it off.

Any help would be great thanks.

iMac, OS X Mountain Lion

Posted on Aug 1, 2012 11:18 AM

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Answer 1

Peter Temp Author

Level 1

17 points

Aug 2, 2012 2:23 AM in response to Peter Temp

Any body know what my iMac is doing? Thanks

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Answer 2

AnaMusic

Level 9

57,562 points

Aug 2, 2012 2:27 AM in response to Peter Temp

Mountain Lion: About Power Nap

http://support.apple.com/kb/HT5394

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Answer 3

Peter Temp Author

Level 1

17 points

Aug 2, 2012 2:44 AM in response to AnaMusic

Thanks. I have already read that which is what confuses me more. My iMac shouldn't have Power Nap so why does it turn all the HDDs including the internal drive on every two hours while asleep? I wish to stop it doing that as it cannot be good for the HDD to turn off and on all night.

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Answer 4

Grosiq

Level 1

0 points

Aug 17, 2012 1:39 PM in response to Peter Temp

Hello, I have exacly the same problem, my external drives are waking me up in te middle of the night, this was not happening with 10.6.8. I am using firewire seagate external drive

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Answer 5

Peter Temp Author

Level 1

17 points

Aug 17, 2012 2:06 PM in response to Grosiq

I fixed mine, found that iCloud activated Wake for Network thing in power settings as a part of Find my mac. Just deactivate it in power settings.

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Answer 6

Grosiq

Level 1

0 points

Aug 17, 2012 11:44 PM in response to Peter Temp

This worked for me too. Thanks !

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Answer 7

AnaMusic

Level 9

57,562 points

Aug 18, 2012 12:46 AM in response to Peter Temp

Peter Temp wrote:

I fixed mine, found that iCloud activated Wake for Network thing in power settings as a part of Find my mac. Just deactivate it in power settings.

Thanks for posting back with your solution...

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