diff --git a/hosts/desktop/hardware-configuration.nix b/hosts/desktop/hardware-configuration.nix
index 40143c4..5f9ddbc 100644
--- a/hosts/desktop/hardware-configuration.nix
+++ b/hosts/desktop/hardware-configuration.nix
@@ -64,19 +64,19 @@
       bak = {
         onCalendar = "daily";
         settings = {
-          stream_buffer = "256m";
-          stream_compress = "lz4";
+          #stream_buffer = "256m";
+          stream_compress = "no";
           incremental = "yes";
           snapshot_create = "no";
           snapshot_dir = "@snapshots";
-          timestamp_format = "long";
+          #timestamp_format = "long";
 
           snapshot_preserve_min = "all";
           target_preserve_min = "no";
           target_preserve = "4w 3d";
 
           ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk_nas";
-          ssh_user = "btrbk";
+          ssh_user = "root";
 
           volume = {
             "/mnt/snapshots/root" = {
@@ -146,7 +146,7 @@
   };
 
   fileSystems."/mnt/Mars" = {
-    device = "n1.home.opel-online.de:/srv/nas/@nas";
+    device = "n1.home.opel-online.de:/srv/nas-hot/@nas";
     fsType = "nfs";
     options = ["noauto,users,x-systemd.automount,x-systemd.device-timeout=10,soft,timeo=14,x-systemd.idle-timeout=1min,sec=sys,exec,nfsvers=4.2"];
   };
diff --git a/hosts/lifebook/hardware-configuration.nix b/hosts/lifebook/hardware-configuration.nix
index 39c40d3..c135311 100644
--- a/hosts/lifebook/hardware-configuration.nix
+++ b/hosts/lifebook/hardware-configuration.nix
@@ -98,7 +98,7 @@
             target_preserve = "4w 3d";
 
             ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk_nas";
-            ssh_user = "btrbk";
+            ssh_user = "root";
 
             volume = {
               "/mnt/snapshots/root" = {