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On Thu, May 10, 2012 at 6:55 AM, <napalm@××××××××××.org> wrote: |
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> |
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> hum hum! |
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> I know that Windows does this by default (it annoys me so I disable it) |
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> but does linux disable or stop running the disks if they're inactive? |
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> I'm assuming there's an option somewhere - maybe just `unmount`! |
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Some drives cannot have this spindown "feature" disabled, because it |
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is a fixed value in their firmware in order to be "green"... |
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You can adjust the power management setting with hdparm, and on some |
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drives this allows disabling the spindown or disabling power |
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management altogether. |
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On my HDDs, I cannot disable APM but I can disable spindown by |
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changing the power-saving level to 254. I have a script in |
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/etc/local.d/ which calls: |
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hdparm -B 254 /dev/sd[abcdef] |
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at boot time. |
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To quote the hdparm manpage: |
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"A low value means aggressive power management and a high value means |
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better performance. Possible settings range from values 1 through 127 |
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(which permit spin-down), and values 128 through 254 (which do not |
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permit spin-down). The highest degree of power management is |
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attained with a setting of 1, and the highest I/O performance with a |
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setting of 254. A value of 255 tells hdparm to disable Advanced Power |
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Management altogether on the drive (not all drives support disabling |
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it, but most do)." |
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