Enable automatic ZFS backups to remote server

modules/datasync.nix

@@ -31,4 +31,19 @@
       "force user" = "coace";
     };
   };
+
+  # ZFS automatic backup solution
+  services.znapzend = {
+    enable = true;
+    pure = true;
+    zetup."vault" = {
+      plan = "1h=>10min,1d=>1h,1w=>1d,1m=>1w,1y=>1m";
+      recursive = true;
+      destinations.backup = {
+        host = "10.0.1.4";
+        dataset = "shield/unit";
+        plan = "1w=>1d,1m=>1w,1y=>1m";
+      };
+    };
+  };
 }