diff --git a/daily_folder_backup.sh b/daily_folder_backup.sh
new file mode 100644
index 0000000..c6f92ba
--- /dev/null
+++ b/daily_folder_backup.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+# /opt/backup/daily_folder_backup.sh
+
+BACKUP_DIR="/opt/backup"
+RETENTION_DAYS=3
+DATE=$(date +'%Y-%m-%d')
+
+FOLDERS=(
+  "/opt/nextcloud"
+  "/opt/odoo"
+  "/opt/paperless"
+)
+
+STATUS=0
+FAILED_LIST=()
+
+for SRC in "${FOLDERS[@]}"; do
+  BASENAME=$(basename "$SRC")
+  DEST="${BACKUP_DIR}/${DATE}_${BASENAME}.tar.gz"
+
+  tar -czf "$DEST" "$SRC" 2>/dev/null
+  if [ $? -ne 0 ]; then
+    STATUS=1
+    FAILED_LIST+=("$BASENAME")
+  fi
+done
+
+find "$BACKUP_DIR" -type f -name "*.tar.gz" -mtime +"$RETENTION_DAYS" -exec rm {} \;
+
+# JSON-Ausgabe erzeugen
+if [ $STATUS -eq 0 ]; then
+  echo "{\"status\": \"success\", \"failed\": []}"
+else
+  FAILED_JSON=$(printf '"%s",' "${FAILED_LIST[@]}")
+  FAILED_JSON="[${FAILED_JSON%,}]"
+  echo "{\"status\": \"error\", \"failed\": $FAILED_JSON}"
+fi
+
+exit $STATUS
\ No newline at end of file