add nas hardware-configuration.nix

nas/configuration.nix

@@ -3,7 +3,7 @@
 {
   imports =
     [
-      ../hardware-configuration.nix
+      ./hardware-configuration.nix
       ../common/configuration.nix
     ];
 

nas/hardware-configuration.nix

@@ -0,0 +1,36 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usbhid" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-id/ata-Samsung_SSD_850_EVO_250GB_S21PNXAG923996P-part1";
+      fsType = "btrfs";
+      options = [ "subvol=nixos" ];
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-id/ata-Samsung_SSD_850_EVO_250GB_S21PNXAG923996P-part3";
+      fsType = "vfat";
+    };
+
+  fileSystems."/mnt/backup" = 
+    { device = "/dev/disk/by-uuid/93a86fb5-8c9f-488b-a3e4-ca5444343246";
+      fsType = "btrfs";
+      options = [ "space_cache=v2" ];
+    };
+
+  swapDevices = [ ];
+
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+}