diff --git a/mariadb-backup/mariadb-backup-full.sh b/mariadb-backup/mariadb-backup-full.sh
index 176dd41..fca5ff7 100644
--- a/mariadb-backup/mariadb-backup-full.sh
+++ b/mariadb-backup/mariadb-backup-full.sh
@@ -1,66 +1,100 @@
 #!/bin/bash
+# Backup FULL con atomicità, cleanup, log completi e sicurezza operativa
+# Sicuro per cluster Galera
+# Autore: Marco + Copilot
+
 set -euo pipefail
 
+# Aumenta i file descriptor disponibili
 ulimit -n 65536
 
+# Directory base dei backup
 BACKUP_BASE=/var/backups/tscale01
+
+# Timestamp per la directory del backup
 TIMESTAMP=$(date +%Y%m%d-%H%M%S)
+
+# Directory finale del backup FULL
 TARGET="$BACKUP_BASE/backup-full-$TIMESTAMP"
+
+# File di log generale
 LOGFILE=/var/log/mariadb-backup.log
+
+# Lockfile per evitare esecuzioni concorrenti
 LOCKFILE=/var/lock/mariadb-backup.lock
 
-# assicurati che il logfile esista e abbia permessi restrittivi
+# Nome del server per i log
+SERVER_NAME=$(hostname -s)
+
+# Assicura che il logfile esista e abbia permessi sicuri
 touch "$LOGFILE"
 chown root:root "$LOGFILE"
 chmod 600 "$LOGFILE"
 
-#verifico file lock per non sovrapporre backup
 (
-  flock -n 9 || { echo "[$(date '+%F %T')] SKIP: another backup is running" >> "$LOGFILE"; exit 0; }
+  # FLOCK: evita che due backup partano insieme
+  flock -n 9 || { 
+    echo "[$(date '+%F %T')] [$SERVER_NAME] SKIP: another backup is running" >> "$LOGFILE"
+    exit 0
+  }
 
+  # Crea directory del backup
   mkdir -p "$TARGET"
   chown mysql:mysql "$TARGET"
   chmod 750 "$TARGET"
 
-  TMPLOG=$(mktemp /tmp/mariadb-backup.XXXXXX)
+  # File temporaneo per catturare errori del backup
+  TMPLOG=$(mktemp /tmp/mariadb-backup-full.XXXXXX)
 
   echo "---------------------" >> "$LOGFILE"
-  echo "[$(date '+%F %T')] START backup full $TARGET" >> "$LOGFILE"
+  echo "[$(date '+%F %T')] [$SERVER_NAME] START backup FULL $TARGET" >> "$LOGFILE"
 
-  if mariadb-backup --defaults-file=/etc/mysql/backup.conf --backup --target-dir="$TARGET" --verbose >"$TMPLOG" 2>&1; then
-    echo "[$(date '+%F %T')] NOTE: full created UNPREPARED at $TARGET" >> "$LOGFILE"
-    echo "[$(date '+%F %T')] END backup full $TARGET" >> "$LOGFILE"
+  # Esecuzione backup FULL
+  if mariadb-backup \
+      --defaults-file=/etc/mysql/backup.conf \
+      --backup \
+      --target-dir="$TARGET" \
+      --verbose >"$TMPLOG" 2>&1; then
 
-    # misura dimensione apparente (byte logici)
+    echo "[$(date '+%F %T')] [$SERVER_NAME] NOTE: FULL created UNPREPARED at $TARGET" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] END backup FULL $TARGET" >> "$LOGFILE"
+
+    # Misura dimensione apparente (byte logici)
     size_apparent_bytes=$(find "$TARGET" -type f -printf '%s\n' 2>/dev/null | awk '{s+=$1} END{print s+0}')
     size_apparent_human=$(numfmt --to=iec --suffix=B "$size_apparent_bytes" 2>/dev/null || echo "${size_apparent_bytes}B")
 
-    # misura spazio su disco effettivo (byte allocati)
+    # Misura spazio su disco effettivo (byte allocati)
     size_disk_bytes=$(du -s --block-size=1 "$TARGET" 2>/dev/null | cut -f1 || echo 0)
     size_disk_human=$(numfmt --to=iec --suffix=B "$size_disk_bytes" 2>/dev/null || echo "${size_disk_bytes}B")
 
-    echo "[$(date '+%F %T')] SIZE apparent: $size_apparent_human ($size_apparent_bytes bytes) for $TARGET" >> "$LOGFILE"
-    echo "[$(date '+%F %T')] SIZE on-disk: $size_disk_human ($size_disk_bytes bytes) for $TARGET" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] SIZE apparent: $size_apparent_human ($size_apparent_bytes bytes)" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] SIZE on-disk: $size_disk_human ($size_disk_bytes bytes)" >> "$LOGFILE"
 
-    echo "[$(date '+%F %T')] RESULT: OK, no errors" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] RESULT: OK, no errors" >> "$LOGFILE"
 
     rm -f "$TMPLOG"
+
   else
-    echo "[$(date '+%F %T')] ERROR during backup for $TARGET. See $TMPLOG" >> "$LOGFILE"
+    # Backup fallito → log + cleanup directory
+    echo "[$(date '+%F %T')] [$SERVER_NAME] ERROR during FULL backup for $TARGET. See $TMPLOG" >> "$LOGFILE"
     tail -n 200 "$TMPLOG" >> "$LOGFILE"
+
+    echo "[$(date '+%F %T')] [$SERVER_NAME] CLEANUP: removing incomplete FULL backup directory $TARGET" >> "$LOGFILE"
+    rm -rf "$TARGET"
+
     rm -f "$TMPLOG"
     exit 1
   fi
 
-  # rotazione: mantieni 7 giorni solo per i full (log dettagliato come per gli incrementali)
+  # Rotazione: mantieni 7 giorni di FULL
   TO_DELETE=$(find "$BACKUP_BASE" -maxdepth 1 -type d -name 'backup-full-*' -mtime +7 -print 2>/dev/null || true)
 
   if [ -n "$TO_DELETE" ]; then
-    echo "[$(date '+%F %T')] ROTATE: removing old fulls:" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] ROTATE: removing old FULL backups:" >> "$LOGFILE"
     echo "$TO_DELETE" >> "$LOGFILE"
     echo "$TO_DELETE" | tr '\n' '\0' | xargs -0 -r rm -rf --
   else
-    echo "[$(date '+%F %T')] ROTATE: no fulls to remove (<=7 days)" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] ROTATE: no FULL backups to remove (<=7 days)" >> "$LOGFILE"
   fi
 
   echo " " >> "$LOGFILE"
diff --git a/mariadb-backup/mariadb-backup-incremental.sh b/mariadb-backup/mariadb-backup-incremental.sh
index f434221..e4bd59a 100644
--- a/mariadb-backup/mariadb-backup-incremental.sh
+++ b/mariadb-backup/mariadb-backup-incremental.sh
@@ -1,79 +1,117 @@
 #!/bin/bash
+# Backup INCREMENTAL con atomicità, cleanup, log completi e sicurezza operativa
+# Sicuro per cluster Galera
+# Autore: Marco + Copilot
+
 set -euo pipefail
 
+# Aumenta i file descriptor disponibili
 ulimit -n 65536
 
+# Directory base dei backup
 BACKUP_BASE=/var/backups/tscale01
+
+# Prefissi per full e incremental
 FULL_PREFIX=backup-full-
 INC_PREFIX=backup-inc-
+
+# Timestamp per la directory del backup
 TIMESTAMP=$(date +%Y%m%d-%H%M%S)
+
+# Directory finale del backup INCREMENTAL
 TARGET="$BACKUP_BASE/${INC_PREFIX}${TIMESTAMP}"
+
+# File di log generale
 LOGFILE=/var/log/mariadb-backup.log
+
+# Lockfile per evitare esecuzioni concorrenti
 LOCKFILE=/var/lock/mariadb-backup.lock
 
-# assicurati che il logfile esista e abbia permessi restrittivi
+# Nome del server per i log
+SERVER_NAME=$(hostname -s)
+
+# Assicura che il logfile esista e abbia permessi sicuri
 touch "$LOGFILE"
 chown root:root "$LOGFILE"
 chmod 600 "$LOGFILE"
 
-#verifico file lock per non sovrapporre backup
 (
-  flock -n 9 || { echo "[$(date '+%F %T')] SKIP: another backup is running" >> "$LOGFILE"; exit 0; }
+  # FLOCK: evita che due backup partano insieme
+  flock -n 9 || { 
+    echo "[$(date '+%F %T')] [$SERVER_NAME] SKIP: another backup is running" >> "$LOGFILE"
+    exit 0
+  }
 
+  # Trova l'ultimo FULL disponibile
   LATEST_FULL=$(ls -1d ${BACKUP_BASE}/${FULL_PREFIX}* 2>/dev/null | sort | tail -n1 || true)
 
   if [ -z "$LATEST_FULL" ]; then
-    echo "[$(date '+%F %T')] ERROR: no full backup found in $BACKUP_BASE. Create a full backup first." >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] ERROR: no FULL backup found. Create a FULL backup first." >> "$LOGFILE"
     exit 1
   fi
 
   BASE_DIR="$LATEST_FULL"
 
+  # Crea directory del backup
   mkdir -p "$TARGET"
   chown mysql:mysql "$TARGET"
   chmod 750 "$TARGET"
 
+  # File temporaneo per catturare errori del backup
   TMPLOG=$(mktemp /tmp/mariadb-backup-inc.XXXXXX)
 
   echo "---------------------" >> "$LOGFILE"
-  echo "[$(date '+%F %T')] START incremental backup $TARGET (base: $BASE_DIR)" >> "$LOGFILE"
+  echo "[$(date '+%F %T')] [$SERVER_NAME] START incremental backup $TARGET (base: $BASE_DIR)" >> "$LOGFILE"
 
-  if mariadb-backup --defaults-file=/etc/mysql/backup.conf --backup --target-dir="$TARGET" --incremental-basedir="$BASE_DIR" --verbose >"$TMPLOG" 2>&1; then
-    echo "[$(date '+%F %T')] END incremental backup $TARGET" >> "$LOGFILE"
+  # Esecuzione backup INCREMENTAL
+  if mariadb-backup \
+      --defaults-file=/etc/mysql/backup.conf \
+      --backup \
+      --target-dir="$TARGET" \
+      --incremental-basedir="$BASE_DIR" \
+      --verbose >"$TMPLOG" 2>&1; then
 
-    # misura dimensione apparente (byte logici)
+    echo "[$(date '+%F %T')] [$SERVER_NAME] END incremental backup $TARGET" >> "$LOGFILE"
+
+    # Misura dimensione apparente (byte logici)
     size_apparent_bytes=$(find "$TARGET" -type f -printf '%s\n' 2>/dev/null | awk '{s+=$1} END{print s+0}')
     size_apparent_human=$(numfmt --to=iec --suffix=B "$size_apparent_bytes" 2>/dev/null || echo "${size_apparent_bytes}B")
 
-    # misura spazio su disco effettivo (byte allocati)
+    # Misura spazio su disco effettivo (byte allocati)
     size_disk_bytes=$(du -s --block-size=1 "$TARGET" 2>/dev/null | cut -f1 || echo 0)
     size_disk_human=$(numfmt --to=iec --suffix=B "$size_disk_bytes" 2>/dev/null || echo "${size_disk_bytes}B")
 
-    echo "[$(date '+%F %T')] SIZE apparent: $size_apparent_human ($size_apparent_bytes bytes) for $TARGET" >> "$LOGFILE"
-    echo "[$(date '+%F %T')] SIZE on-disk: $size_disk_human ($size_disk_bytes bytes) for $TARGET" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] SIZE apparent: $size_apparent_human ($size_apparent_bytes bytes)" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] SIZE on-disk: $size_disk_human ($size_disk_bytes bytes)" >> "$LOGFILE"
 
-    echo "[$(date '+%F %T')] RESULT: OK, no errors" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] RESULT: OK, no errors" >> "$LOGFILE"
 
     rm -f "$TMPLOG"
+
   else
-    echo "[$(date '+%F %T')] ERROR during incremental backup for $TARGET. See $TMPLOG" >> "$LOGFILE"
+    # Backup fallito → log + cleanup directory
+    echo "[$(date '+%F %T')] [$SERVER_NAME] ERROR during incremental backup for $TARGET. See $TMPLOG" >> "$LOGFILE"
     tail -n 200 "$TMPLOG" >> "$LOGFILE"
+
+    echo "[$(date '+%F %T')] [$SERVER_NAME] CLEANUP: removing incomplete incremental backup directory $TARGET" >> "$LOGFILE"
+    rm -rf "$TARGET"
+
     rm -f "$TMPLOG"
     exit 1
   fi
 
-  # rotazione: mantieni esattamente 11 incrementali più recenti
+  # Rotazione: mantieni esattamente 11 incrementali più recenti
   cd "$BACKUP_BASE" || exit 1
   TO_DELETE=$(ls -1d ${INC_PREFIX}* 2>/dev/null | sort | head -n -11 || true)
 
   if [ -n "$TO_DELETE" ]; then
-    echo "[$(date '+%F %T')] ROTATE: removing old incrementals:" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] ROTATE: removing old incrementals:" >> "$LOGFILE"
     echo "$TO_DELETE" >> "$LOGFILE"
     echo "$TO_DELETE" | xargs -r -d '\n' rm -rf --
   else
-    echo "[$(date '+%F %T')] ROTATE: no incrementals to remove (<=11 present)" >> "$LOGFILE"
+    echo "[$(date '+%F %T')] [$SERVER_NAME] ROTATE: no incrementals to remove (<=11 present)" >> "$LOGFILE"
   fi
 
   echo " " >> "$LOGFILE"
 
-) 9>"$LOCKFILE"
\ No newline at end of file
+) 9>"$LOCKFILE"