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# hdparm -B /dev/sdb
/dev/sdb:
APM_level = not supportedDrive is a WD Blue WD10EZEX,
NOT a WD Green.
I can spin down the drive with
hdparm -y /dev/sdbLast edited by teateawhy (2016-05-31 21:17:15)
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APM usually controls automatic head parking and WD Blues (at least the ones I had few years ago) don't have this feature.
Nothing unusual for performance oriented disks.
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Reading the documentation, it seems you are supposed to use "-S" if you want the drive to spin down when idle. It looks like this for me when I use it:
$ sudo hdparm -S24 /dev/sdc
/dev/sdc:
setting standby to 24 (2 minutes)
$ sudo hdparm -S0 /dev/sdc
/dev/sdc:
setting standby to 0 (off)I tried setting it to 30 seconds, but nothing seems to happen. My drive seems to have ignored that standby setting. It's an older WD Red (a slow 5400 RPM drive for RAID in a NAS). That "hdparm -y" still works.
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My drive seems to have ignored that standby setting.
Yes, my drive does ignore -S as well.
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APM usually controls automatic head parking and WD Blues (at least the ones I had few years ago) don't have this feature.
Nothing unusual for performance oriented disks.
APM can also control automatic spin down.
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Made an icon on the desktop that runs "hdparm -y". Good enough.
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