diff --git a/hosts/server7/hardware-configuration.nix b/hosts/server7/hardware-configuration.nix
index e198467f..0f87d7fa 100644
--- a/hosts/server7/hardware-configuration.nix
+++ b/hosts/server7/hardware-configuration.nix
@@ -1,70 +1,59 @@
 # 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, ... }:
+{ config, lib, pkgs, modulesPath, ... }:
 
 {
-  # imports = [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix> ];
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
 
   boot.initrd.availableKernelModules =
     [ "ehci_pci" "ahci" "nvme" "usbhid" "sd_mod" ];
-  boot.initrd.kernelModules = [ ];
+  boot.initrd.kernelModules = [ "dm-snapshot" ];
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
-  boot.supportedFilesystems = [ "zfs" ];
 
   fileSystems."/" = {
     device = "/dev/disk/by-uuid/f14628ce-0f13-4544-9197-0ddda291f48f";
     fsType = "ext4";
   };
 
+  fileSystems."/var/lib/ceph/osd/ceph-7" = {
+    device = "tmpfs";
+    fsType = "tmpfs";
+  };
+
   fileSystems."/boot" = {
     device = "/dev/disk/by-uuid/9812-00B2";
     fsType = "vfat";
   };
 
-  fileSystems."/zones/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3/cores" = {
-    device = "nvme0n1/cores/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3";
-    fsType = "zfs";
-  };
-
   fileSystems."/nvme0n1" = {
     device = "nvme0n1";
     fsType = "zfs";
   };
 
-  fileSystems."/zones/9f467f1e-000b-e771-e117-b32261e48220/cores" = {
-    device = "nvme0n1/cores/9f467f1e-000b-e771-e117-b32261e48220";
-    fsType = "zfs";
-  };
-
-  fileSystems."/zones/archive" = {
-    device = "nvme0n1/archive";
-    fsType = "zfs";
-  };
-
-  fileSystems."/zones/9a9880d3-82db-c500-fcaa-d4e5a5cc617d/cores" = {
-    device = "nvme0n1/cores/9a9880d3-82db-c500-fcaa-d4e5a5cc617d";
-    fsType = "zfs";
-  };
-
-  fileSystems."/zones/eec98403-5f4f-cadf-f4ff-aa9a99b4cdb5/cores" = {
-    device = "nvme0n1/cores/eec98403-5f4f-cadf-f4ff-aa9a99b4cdb5";
-    fsType = "zfs";
-  };
-
-  fileSystems."/zones/global/cores" = {
-    device = "nvme0n1/cores/global";
-    fsType = "zfs";
-  };
-
   fileSystems."/zones/b090f14b-0a60-4451-e82a-c5291e5951de/cores" = {
     device = "nvme0n1/cores/b090f14b-0a60-4451-e82a-c5291e5951de";
     fsType = "zfs";
   };
 
-  fileSystems."/zones/3516ab22-69b0-e327-95ec-f9be8852ee44/cores" = {
-    device = "nvme0n1/cores/3516ab22-69b0-e327-95ec-f9be8852ee44";
+  fileSystems."/zones/9a9880d3-82db-c500-fcaa-d4e5a5cc617d/cores" = {
+    device = "nvme0n1/cores/9a9880d3-82db-c500-fcaa-d4e5a5cc617d";
+    fsType = "zfs";
+  };
+
+  fileSystems."/zones/archive" = {
+    device = "nvme0n1/archive";
+    fsType = "zfs";
+  };
+
+  fileSystems."/zones/eec98403-5f4f-cadf-f4ff-aa9a99b4cdb5/cores" = {
+    device = "nvme0n1/cores/eec98403-5f4f-cadf-f4ff-aa9a99b4cdb5";
+    fsType = "zfs";
+  };
+
+  fileSystems."/zones/9f467f1e-000b-e771-e117-b32261e48220/cores" = {
+    device = "nvme0n1/cores/9f467f1e-000b-e771-e117-b32261e48220";
     fsType = "zfs";
   };
 
@@ -73,11 +62,36 @@
     fsType = "zfs";
   };
 
+  fileSystems."/zones/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3/cores" = {
+    device = "nvme0n1/cores/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3";
+    fsType = "zfs";
+  };
+
+  fileSystems."/zones/3516ab22-69b0-e327-95ec-f9be8852ee44/cores" = {
+    device = "nvme0n1/cores/3516ab22-69b0-e327-95ec-f9be8852ee44";
+    fsType = "zfs";
+  };
+
+  fileSystems."/zones/global/cores" = {
+    device = "nvme0n1/cores/global";
+    fsType = "zfs";
+  };
+
   fileSystems."/nvme0n1/c3d2.de" = {
     device = "nvme0n1/c3d2.de";
     fsType = "zfs";
   };
 
+  fileSystems."/nvme0n1/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3" = {
+    device = "nvme0n1/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3";
+    fsType = "zfs";
+  };
+
+  fileSystems."/nvme0n1/b28b36ed-1824-3a6c-cdbb-258c7dd63317" = {
+    device = "nvme0n1/b28b36ed-1824-3a6c-cdbb-258c7dd63317";
+    fsType = "zfs";
+  };
+
   fileSystems."/nvme0n1/b090f14b-0a60-4451-e82a-c5291e5951de" = {
     device = "nvme0n1/b090f14b-0a60-4451-e82a-c5291e5951de";
     fsType = "zfs";
@@ -88,43 +102,13 @@
     fsType = "zfs";
   };
 
-  fileSystems."/nvme0n1/9a9880d3-82db-c500-fcaa-d4e5a5cc617d" = {
-    device = "nvme0n1/9a9880d3-82db-c500-fcaa-d4e5a5cc617d";
-    fsType = "zfs";
-  };
-
-  fileSystems."/nvme0n1/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3" = {
-    device = "nvme0n1/9c31e6c7-97ee-e757-b5e8-d4f07a25bdc3";
-    fsType = "zfs";
-  };
-
-  fileSystems."/nvme0n1/c3d2.de/admin" = {
-    device = "nvme0n1/c3d2.de/admin";
-    fsType = "zfs";
-  };
-
-  fileSystems."/nvme0n1/c3d2.de/templates" = {
-    device = "nvme0n1/c3d2.de/templates";
-    fsType = "zfs";
-  };
-
-  fileSystems."/nvme0n1/d5a8bfc2-6d01-6d5e-ad3f-edf032eedd89" = {
-    device = "nvme0n1/d5a8bfc2-6d01-6d5e-ad3f-edf032eedd89";
-    fsType = "zfs";
-  };
-
   fileSystems."/nvme0n1/a9786e8b-fce2-7567-6467-2a95086a51d4" = {
     device = "nvme0n1/a9786e8b-fce2-7567-6467-2a95086a51d4";
     fsType = "zfs";
   };
 
-  fileSystems."/nvme0n1/3e65fa50-2f41-8792-df46-8c826bddab75" = {
-    device = "nvme0n1/3e65fa50-2f41-8792-df46-8c826bddab75";
-    fsType = "zfs";
-  };
-
-  fileSystems."/nvme0n1/9f467f1e-000b-e771-e117-b32261e48220" = {
-    device = "nvme0n1/9f467f1e-000b-e771-e117-b32261e48220";
+  fileSystems."/nvme0n1/9a9880d3-82db-c500-fcaa-d4e5a5cc617d" = {
+    device = "nvme0n1/9a9880d3-82db-c500-fcaa-d4e5a5cc617d";
     fsType = "zfs";
   };
 
@@ -133,8 +117,8 @@
     fsType = "zfs";
   };
 
-  fileSystems."/nvme0n1/b28b36ed-1824-3a6c-cdbb-258c7dd63317" = {
-    device = "nvme0n1/b28b36ed-1824-3a6c-cdbb-258c7dd63317";
+  fileSystems."/nvme0n1/9f467f1e-000b-e771-e117-b32261e48220" = {
+    device = "nvme0n1/9f467f1e-000b-e771-e117-b32261e48220";
     fsType = "zfs";
   };
 
@@ -143,8 +127,8 @@
     fsType = "zfs";
   };
 
-  fileSystems."/nvme0n1/0cc567e5-5e4c-1868-eca3-4426508cbfb9" = {
-    device = "nvme0n1/0cc567e5-5e4c-1868-eca3-4426508cbfb9";
+  fileSystems."/nvme0n1/d5a8bfc2-6d01-6d5e-ad3f-edf032eedd89" = {
+    device = "nvme0n1/d5a8bfc2-6d01-6d5e-ad3f-edf032eedd89";
     fsType = "zfs";
   };
 
@@ -153,11 +137,31 @@
     fsType = "zfs";
   };
 
+  fileSystems."/nvme0n1/0cc567e5-5e4c-1868-eca3-4426508cbfb9" = {
+    device = "nvme0n1/0cc567e5-5e4c-1868-eca3-4426508cbfb9";
+    fsType = "zfs";
+  };
+
   fileSystems."/nvme0n1/63d6e664-3f1f-11e8-aef6-a3120cf8dd9d" = {
     device = "nvme0n1/63d6e664-3f1f-11e8-aef6-a3120cf8dd9d";
     fsType = "zfs";
   };
 
+  fileSystems."/nvme0n1/c3d2.de/admin" = {
+    device = "nvme0n1/c3d2.de/admin";
+    fsType = "zfs";
+  };
+
+  fileSystems."/nvme0n1/3e65fa50-2f41-8792-df46-8c826bddab75" = {
+    device = "nvme0n1/3e65fa50-2f41-8792-df46-8c826bddab75";
+    fsType = "zfs";
+  };
+
+  fileSystems."/nvme0n1/c3d2.de/templates" = {
+    device = "nvme0n1/c3d2.de/templates";
+    fsType = "zfs";
+  };
+
   fileSystems."/nvme0n1/e71d4460-8eef-6623-a875-dd5ec20b650f" = {
     device = "nvme0n1/e71d4460-8eef-6623-a875-dd5ec20b650f";
     fsType = "zfs";
@@ -170,7 +174,6 @@
 
   swapDevices = [ ];
 
-  nix.maxJobs = lib.mkDefault 10;
-  nix.buildCores = lib.mkDefault 40;
-  powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
+  nix.maxJobs = lib.mkDefault 40;
+  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
 }