25 lines
874 B
Nix
25 lines
874 B
Nix
# Power management for NAS
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# - CPU powersave governor (scales up on demand for transcoding)
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# - Disk spindown after 15 minutes idle
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{ config, lib, pkgs, ... }:
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{
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# CPU Power Management - powersave scales up on demand for transcoding
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powerManagement.cpuFreqGovernor = "powersave";
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# Disk spindown - hdparm for Seagate 18TB drives
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environment.systemPackages = [ pkgs.hdparm ];
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services.udev.extraRules = ''
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# Seagate 18TB NAS drives - APM 127 allows spindown, -S 180 = 15 min
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ACTION=="add", KERNEL=="sd[a-z]", SUBSYSTEM=="block", \
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ATTRS{model}=="ST18000NM000J*", \
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RUN+="${pkgs.hdparm}/bin/hdparm -B 127 -S 180 /dev/%k"
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# Toshiba 20TB NAS drives - same settings
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ACTION=="add", KERNEL=="sd[a-z]", SUBSYSTEM=="block", \
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ATTRS{model}=="TOSHIBA MG10ACA20TE*", \
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RUN+="${pkgs.hdparm}/bin/hdparm -B 127 -S 180 /dev/%k"
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'';
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}
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