diff --git a/hosts/jupiter/hardware-configuration.nix b/hosts/jupiter/hardware-configuration.nix
index f4d7d06..c2003b2 100644
--- a/hosts/jupiter/hardware-configuration.nix
+++ b/hosts/jupiter/hardware-configuration.nix
@@ -15,7 +15,7 @@
 {
   imports =
     [(modulesPath + "/profiles/qemu-guest.nix")] ++
-      [( import ../../modules/hardware/backup.nix )];
+    [( import ../../modules/hardware/backup.nix )];
 
   boot.initrd.availableKernelModules = [ "uhci_hcd" "ehci_pci" "ahci" "virtio_pci" "virtio_scsi" "sr_mod" "virtio_blk" ];
   boot.initrd.kernelModules = [  ];
diff --git a/hosts/nasbackup/hardware-configuration.nix b/hosts/nasbackup/hardware-configuration.nix
index be9ac14..c9c7a44 100644
--- a/hosts/nasbackup/hardware-configuration.nix
+++ b/hosts/nasbackup/hardware-configuration.nix
@@ -74,9 +74,9 @@
               };
           };
           bak = {
-              stream_compress = "lz4";
               onCalendar = "weekly";
               settings = {
+                  stream_compress = "lz4";
                   incremental = "yes";
                   snapshot_create = "no";
                   snapshot_dir = "@snapshots";
@@ -86,7 +86,8 @@
                   target_preserve_min = "no";
                   target_preserve = "4w 2m";
 
-                  ssh_identity = "/etc/btrbk/ssh/id_ed25512_btrbk";
+                  ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk";
+                  ssh_user = "btrbk";
                 
                   volume =  {
                       "ssh://jupiter.home.opel-online.de/mnt/snapshots/Mars" = {
@@ -100,7 +101,11 @@
                       "ssh://jupiter.home.opel-online.de/mnt/snapshots/Pluto" = {
                           target = "/mnt/nas/Backups/nas/Pluto";
                           subvolume = {
-                              "@" = {};
+                              "@/Games" = {};
+                              "@/IT" = {};
+                              "@/Media" = {};
+                              "@/Pictures" = {};
+                              "@/Rest" = {};
                           };
                       };
                   };
@@ -181,7 +186,7 @@
   fileSystems."/mnt/nas" =
     { device = "/dev/disk/by-uuid/6f53d32d-b56f-42ec-bfad-c0b8d1114015";
       fsType = "btrfs";
-      options = [ "compress=zstd,space_cache=v2,noatime,subvol=@nasbak" ];
+      options = [ "compress=zstd:9,space_cache=v2,noatime,subvol=@nasbak" ];
     };
 
   fileSystems."/boot" =