diff --git a/hosts/desktop/hardware-configuration.nix b/hosts/desktop/hardware-configuration.nix
index 2b55762..102b87b 100644
--- a/hosts/desktop/hardware-configuration.nix
+++ b/hosts/desktop/hardware-configuration.nix
@@ -34,6 +34,7 @@
   };
 
   services.btrbk = {
+      extraPackages = [ pkgs.lz4 ];
       instances = {
           hf = {
               onCalendar = "hourly";
@@ -56,6 +57,32 @@
                   };
               };
           };
+          bak = {
+              onCalendar = "daily";
+              settings = {
+                  stream_compress = "lz4";
+                  incremental = "yes";
+                  snapshot_create = "no";
+                  snapshot_dir = "@snapshots";
+                  timestamp_format = "long";
+
+                  snapshot_preserve_min = "all";
+                  target_preserve_min = "no";
+                  target_preserve = "2m 4w";
+
+                  ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk_nas";
+                  ssh_user = "btrbk";
+                
+                  volume =  {
+                      "/mnt/snapshots/root" = {
+                          subvolume = {
+                              "@home" = {};
+                          };
+		          target = "ssh://jupiter.home.opel-online.de:2220/mnt/snapshots/Mars/@snapshots/@hades";
+                      };
+                  };
+	      };
+	  };
       };
   };
 
diff --git a/hosts/jupiter/hardware-configuration.nix b/hosts/jupiter/hardware-configuration.nix
index 34bd410..730528d 100644
--- a/hosts/jupiter/hardware-configuration.nix
+++ b/hosts/jupiter/hardware-configuration.nix
@@ -50,6 +50,7 @@
   };
 
   services.btrbk = {
+      extraPackages = [ pkgs.lz4 ];
       instances = {
           hf = {
               onCalendar = "hourly";
diff --git a/hosts/nasbackup/hardware-configuration.nix b/hosts/nasbackup/hardware-configuration.nix
index 7acdee4..d833726 100644
--- a/hosts/nasbackup/hardware-configuration.nix
+++ b/hosts/nasbackup/hardware-configuration.nix
@@ -51,6 +51,7 @@
   };
 
   services.btrbk = {
+      extraPackages = [ pkgs.lz4 ];
       instances = {
           hf = {
               onCalendar = "hourly";
@@ -91,7 +92,7 @@
                   ssh_user = "btrbk";
                 
                   volume =  {
-                      "ssh://jupiter.home.opel-online.de/mnt/snapshots/Mars" = {
+                      "ssh://jupiter.home.opel-online.de:2220/mnt/snapshots/Mars" = {
                           target = "/mnt/nas/Backups/Mars";
                           subvolume = {
                               "@nas" = {};
@@ -99,7 +100,7 @@
                       };
                   };
                   volume =  {
-                      "ssh://jupiter.home.opel-online.de/mnt/snapshots/Pluto" = {
+                      "ssh://jupiter.home.opel-online.de:2220/mnt/snapshots/Pluto" = {
                           target = "/mnt/nas/Backups/Pluto";
                           subvolume = {
                               "@/Games" = {};
diff --git a/modules/hardware/backup.nix b/modules/hardware/backup.nix
index cb345e5..a95c781 100644
--- a/modules/hardware/backup.nix
+++ b/modules/hardware/backup.nix
@@ -9,6 +9,10 @@
         key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDU2NJ9xwYnp6/frIOv96ih8psiFcC2eOQeT+ZEMW5rq";
         roles = [ "source" "info" "send" ];
       }
+      {
+        key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIma7jNVQZM+lFMOKUex0+cyDpeUA3Wo4SEJ7P9YnHPG";
+        roles = [ "target" "info" "receive" ];
+      }
     ];
   };
 }