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Hi there, |
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I'm using Gentoo ~amd64 on my NAS. |
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This is my setup: |
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Mainboard - Asus E35M1 |
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CPU - AMD E350 |
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HDD - 1x 500GiB WD Caviar Green WD5000AADS (root) |
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HDD - 4x 3TiB WD Caviar Green WD30EZRX (Raid10) |
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As these hard drives are desktop hard drives and not designed for 24/7 |
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purposes, I want to spin them down when they are not in use. |
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(And in fact, they will probably be idling most of the time, so let's |
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save energy) |
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I'm able to force spin down those drive by using hdparm -y. hdparm -C |
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then tells me, that they switched from active/idle to standby. |
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Setting standby-time using hdparm -S also seems to work fine: |
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hdparm -S 10 /dev/sdb |
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/dev/sdb: |
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setting standby to 10 (50 seconds) |
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But this does not standby my drive after 50 seconds. So I tried to set |
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the Power Management Level: |
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hdparm -B 5 /dev/sdb |
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/dev/sdb: |
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setting Advanced Power Management level to 0x05 (5) |
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HDIO_DRIVE_CMD failed: Input/output error |
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APM_level = not supported |
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Obviously, my system does not support APM what I can hardly believe... |
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So I tried to enable APM but my kernel configuration doesn't allow me to |
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enable APM support as long as I use a 64 bit kernel - APM option is only |
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available for 32 bit kernels. |
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What am I doing wrong? My hardware is *relatively* new and I don't |
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believe that it doesn't support those power management features. |
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But besides that, does anyone have further tips or tricks to protect |
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hard drives? E.g. try to minimize Load Cycle Count, ... |
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Output of hdparm -I: http://pastebin.com/RyAU6u8T |
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Cheers, |
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Ralf |
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