On 10/28/2017 12:36 PM, Ralf Jung wrote: > I am having the same problem with the following drive: > > ATA device, with non-removable media > Model Number: WDC WD10SPZX-00Z10T0 > Serial Number: WD-WX21E370JZH3 > Firmware Revision: 01.01A01 > Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev > 2.5, SATA Rev 2.6, SATA Rev 3.0
-B Get/set Advanced Power Management feature... values 1 through 127 (which permit spin-down), and values 128 through 254 (which do not permit spin-down). If you are curios what do the different values see this post [0] Could you please try setting spindown after setting APM to 127 or less? If that doesn't help please try disabling APM by setting it to 255. Thought the drive may become too hot if you disable APM completely.[1] Also note that for usb/fireware disks hdparm doesn't set the default APM values (254 on AC, 128 on battery)[2] > > Is it possible that some drives simply don't support such automatic > spindown, and expect the OS to handle that? > > Kind regards, > Ralf > Some drives such as WD Green ones handle APM and spin down differently and don't work with hdparm. You may have more luck with idle3-tools, but no idea if this tool is applicable to WD Blue disks. It's rather the disk firmware and not the OS handles the spindown in this case. So I think in general it's better to avoid disks using exotic features. [0] https://superuser.com/questions/555400/what-do-different-values-of-hard-drives-advanced-power-management-feature-hdpa/558622#558622 [1] https://community.wd.com/t/wd-blue-mobile-spins-down-too-early-or-not-at-all-and-ignores-spindown-time-settings/17628 [2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=880008#10
