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Is HDD Advanced Power Management in SnakeOil OS possible?


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#1
Hello! Smile

I'm building a SnakeOil Intel NUC based transport that will feed my DAC.

I want to replace NUC's 2.5" 120GB SSD with a 2TB HDD, in order to accommodate a much larger music library.

Many laptop 2.5" HDD's have this aggressive head auto parking feature, that can shorten drive's life due to excessive load/unload cycles.

On my MacMini I'm dealing with this issue by using HDAPM tool and setting Advanced Power Management level to 0xfe (254).

I see that Linux users use similar tool - HDPARM.

Is there a way to implement this under SnakeOil OS? 

I'm planning to run my new music computer for many hours a day, so disabling unnecessary head parking would prolong the HDD's life.

Thank you for your great work! Smile
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#2
Nice tweak I think (assuming you are using the old spinning disks and not SSDs).

You'll need to SSH into your snakeoil PC.

Run the following:
Code:
apt install idle3-tools


then modify /etc/rc.local file:
Code:
sudo vi /etc/rc.local


and add a line (Replace X with the drive letter)
Code:
idle3ctl -d /dev/sdX


Note that your changes to rc.local may disappear on firmware updates... In the future Snakeoil will allow you run a script on start up/shutdown, but until then, keep this in mind.
Snakeoil Operating System - Music, your way!
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#3
Thanks for a super quick answer!  Smile
Yes, it is about good ole spinning drives.  Smile
I'm not sure if I'm going to by a WD drive, and, if I understood correctly the info on the net, idle3 utility works exclusively on WD.
I'm leaning more to Seagate, due to a very tempting price that I can get locally.
HDPARM should be more universal? More like HDAPM that I'm using on my MacMini with a Hitachi drive.
Can it be used with SnakeOil? What would be the procedure?
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#4
(06-Mar-2020, 07:25 PM) koko6969koki Wrote: Thanks for a super quick answer!  Smile
Yes, it is about good ole spinning drives.  Smile
I'm not sure if I'm going to by a WD drive, and, if I understood correctly the info on the net, idle3 utility works exclusively on WD.
I'm leaning more to Seagate, due to a very tempting price that I can get locally.
HDPARM should be more universal? More like HDAPM that I'm using on my MacMini with a Hitachi drive.
Can it be used with SnakeOil? What would be the procedure?


It's more the firmware on the HDD than Linux software. Seagate will be a good choice, as hdparm specifically says:
 
Code:
       -Z     Disable the automatic power-saving function of certain Seagate drives (ST3xxx models?), to prevent
              them from idling/spinning-down at inconvenient times.


So, try and run this in the SSH session (Replacing X with the correct alphabet:
Code:
sudo hdparm -Z /dev/sdX


If you get no errors, and confirm the HDD is never spun down. You can then add the command in /etc/rc.local
Snakeoil Operating System - Music, your way!
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#5
Thanks a lot!!!  :)
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