diff --git a/hosts/nasbackup/hardware-configuration.nix b/hosts/nasbackup/hardware-configuration.nix
index 26ebd6d..ff6d542 100644
--- a/hosts/nasbackup/hardware-configuration.nix
+++ b/hosts/nasbackup/hardware-configuration.nix
@@ -88,16 +88,22 @@
                   snapshot_preserve_min = "all";
                   target_preserve_min = "no";
                   target_preserve = "4w 2m";
+                  archive_preserve_min = "no";
+                  archive_preserve = "4w 2m";
 
                   ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk";
                   ssh_user = "btrbk";
                 
                   volume =  {
                       "ssh://jupiter.home.opel-online.de:2220/mnt/snapshots/Mars" = {
-                          target = "/mnt/nas/Backups/Mars";
                           subvolume = {
-                              "@nas" = {};
-                              "@hades/@home" = {};
+                              "@nas" = {
+                                  target = "/mnt/nas/Backups/Mars";
+			      };
+                              "@hades/@home" = {
+				  target = "/mnt/nas/Backups/Hades";
+				  snapshot_dir = "@snapshots/@hades";
+			      };
                           };
                       };
                   };