Spinning down External HD when not in use?

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Majesty @majesty68214

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发帖于: 2011年3月10日

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Spinning down External HD when not in use?

I have an external drive with 2 partitions; one for SuperDuper, and one for time machine. I have used AppleScript to automatically mount this External when SuperDuper is scheduled to clone; then automatically dismount the HD when SuperDuper completes the clone. This automation comes in handy being that I don't have to interact with the software at all for daily backups. Now, the problem is that the HD is constantly plugged via my powered USB Hub all day-everyday, so the HD is constantly spinning. Is there any software available that I can use to spin down the drive when it's idle for a while then spin up when SuperDuper mounts it?? Google has yielded no results. ;o/

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What operating system are you using? What model is your external HD? Also it seems to me if your external HD doesn't have an external power source you may be able to write a script or find a program to shut down the usb port when not needed. The same end result would be accomplished.

由 ABCellars 完成的 2011年3月10日

Good Idea!! Im running Snow 10.6.6. I have a HitachiHD that came with my Mac in a generic enclosure. It's a USB enclosure and I do have it connected to a powered USB hub being that I noticed significant transfer speed increase this way compared to the Mac's native USB ports.

由 Majesty 完成的 2011年3月10日

It's asleep. AS long as I kepp the internal HD busy it won't snooze, so this is as good as it gets.

由 Majesty 完成的 2011年3月11日

There are lots of little scripts to do that once every five minutes, need one?

由 mayer 完成的 2011年3月11日

Sure; fire away.

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mayer @mayer

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Try going to the General settings on SuperDuper and change the "On successful completion" option to Sleep Computer.

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I think the idea here is to put the drive to sleep, not the computer.

由 ABCellars 完成的 2011年3月10日

ABCellars is right Rich. I want to spin down the drive; not the whole machine. Although the drive automatically unmounts it still spins constantly.

由 Majesty 完成的 2011年3月10日

I don't know if this will work on an external USB powered drive but you might check Energy Saver in the System Preferences and check the "Put the hard disk(s) to sleep when possible". Is there a reason you don't use Time Machine to just back up your changes for that day? It seems like a lot of hard work to completely clone the drive everyday for such small changes.

由 mayer 完成的 2011年3月10日

That Energy Star preference pane is only for internal drives. Well, I use smart update which only backs up any recent changes since the last clone. It doesn't completely clone the drive every time. It works almost like Time Machine. I don't like Time Machine backups. They are storage hogs and failed me twice when trying to restore the data to a fresh OS install. Tons of error messages.

由 Majesty 完成的 2011年3月10日

Found it. CHUD Tools - Apple Developer stuff: http://lowendmac.com/musings/06/0217.htm...

由 mayer 完成的 2011年3月10日

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What operating system are you using? What model is your external HD? Also it seems to me if your external HD doesn't have an external power source you may be able to write a script or find a program to shut down the usb port when not needed. The same end result would be accomplished. — ABCellars
Good Idea!! Im running Snow 10.6.6. I have a HitachiHD that came with my Mac in a generic enclosure. It's a USB enclosure and I do have it connected to a powered USB hub being that I noticed significant transfer speed increase this way compared to the Mac's native USB ports. — Majesty
It's asleep. AS long as I kepp the internal HD busy it won't snooze, so this is as good as it gets. — Majesty
There are lots of little scripts to do that once every five minutes, need one? — mayer
I think the idea here is to put the drive to sleep, not the computer. — ABCellars
ABCellars is right Rich. I want to spin down the drive; not the whole machine. Although the drive automatically unmounts it still spins constantly. — Majesty
I don't know if this will work on an external USB powered drive but you might check Energy Saver in the System Preferences and check the "Put the hard disk(s) to sleep when possible". Is there a reason you don't use Time Machine to just back up your changes for that day? It seems like a lot of hard work to completely clone the drive everyday for such small changes. — mayer
That Energy Star preference pane is only for internal drives. Well, I use smart update which only backs up any recent changes since the last clone. It doesn't completely clone the drive every time. It works almost like Time Machine. I don't like Time Machine backups. They are storage hogs and failed me twice when trying to restore the data to a fresh OS install. Tons of error messages. — Majesty
Found it. CHUD Tools - Apple Developer stuff: http://lowendmac.com/musings/06/0217.htm... — mayer

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Spinning down External HD when not in use?

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