diff --git a/check_snmp_synology b/check_snmp_synology
index b01b4bc55924cc7dc4d741e4a6e52f83764c1786..2f9c8a2885e3fb8cffbb2b1fbeba1fbc803ff9d0 100755
--- a/check_snmp_synology
+++ b/check_snmp_synology
@@ -147,27 +147,33 @@ EXAMPLE:
 # FUNCTIONS
 # ----------------------------------------------------------------------
 
-# --- write verbose text
+# write verbose text with details in 2 columns
+# param  string  label
+# param  string  value
 _wd()
 {
     if [ "$verbose" = "yes" ] ; then 
-        out="${out}$*
-" ; fi
+        _label=$1
+        shift 1
+        out+=$( printf "%-25s %s" "${_label}" "$*" )"
+"
+    fi
 }
 
-# --- get a value from SNMP output data
+# get a value from SNMP output data
 # param  string  mib string
 _get(){
     echo "$SNMPOUTPUT" | grep "${1} " | cut -d "=" -f2 | cut -f 2- -d " "
 }
 
-# --- show usage
+# show usage and abort
 usage()
 {
         ph.abort "$USAGE"
 }
 
 # disable all flags to perform single checks
+# see param check in main section
 _disableflags(){
     if [ $FLAG_SINGLECHECK -ne 1 ]; then
         FLAG_SINGLECHECK=1
@@ -250,10 +256,9 @@ fi
 # --- SNPGET to all wanted oids
 
 OIDLIST=""
-test $FLAG_SYSTEM      -ne 0 && OIDLIST+="$OID_model $OID_serialNumber $OID_DSMVersion $OID_systemStatus $OID_powerStatus $OID_systemFanStatus $OID_CPUFanStatus "
+test $FLAG_SYSTEM      -ne 0 && OIDLIST+="$OID_model $OID_serialNumber $OID_DSMUpdateAvailable $OID_DSMVersion $OID_systemStatus $OID_powerStatus $OID_systemFanStatus $OID_CPUFanStatus "
 test $FLAG_DISK        -ne 0 && OIDLIST+="$OID_disk $OID_RAID "
-test $FLAG_UPDATE      -ne 0 && OIDLIST+="$OID_DSMUpdateAvailable "
-test $FLAG_UPDATE      -ne 0 && test $FLAG_SYSTEM -eq 0 && OIDLIST+="$OID_DSMVersion "
+test $FLAG_UPDATE      -ne 0 && test $FLAG_SYSTEM -eq 0 && OIDLIST+="$OID_DSMUpdateAvailable $OID_DSMVersion "
 test $FLAG_TEMPERATURE -ne 0 && OIDLIST+="$OID_temp "
 
 
@@ -270,16 +275,36 @@ _wd ""
 
 # ---------- check system data
 if [ $FLAG_SYSTEM -ne 0 ]; then
+    _wd "---------- INFORMATION"
     model=$(_get $OID_model)
-    _wd "Synology model:    $model"
+    _wd "Synology model:" "$model"
 
     serialNumber=$(_get $OID_serialNumber)
-    _wd "Synology s/n:      $serialNumber"
+    _wd "Synology s/n:" "$serialNumber"
 
     DSMVersion=$(_get $OID_DSMVersion)
-    _wd "DSM Version:       $DSMVersion"
+    _wd "DSM Version:" "$DSMVersion"
 
-    _add_status "Synology $model (s/n: $serialNumber, $DSMVersion)"
+    _add_status "  Synology $model (s/n: $serialNumber, $DSMVersion)"
+fi
+
+# ---------- check update
+if [ $FLAG_SYSTEM -ne 0 -o $FLAG_UPDATE -ne 0 ]; then
+    typeset -i DSMupdate=$(_get $OID_DSMUpdateAvailable)
+
+    # test $FLAG_SINGLECHECK -ne 0 || ( _wd "Update available:  ${aStatusUpgrade[$DSMupdate]} ($DSMupdate)"; _wd "" )
+    _wd "Update available:" "${aStatusUpgrade[$DSMupdate]} ($DSMupdate)"
+    _wd ""
+    if [ $DSMupdate -eq 1 ] ; then
+        ph.setStatus "warning"
+        _add_status "Update available"
+    else
+        test $FLAG_SINGLECHECK -ne 0 && _add_status "Up to date"
+    fi
+fi
+
+if [ $FLAG_SYSTEM -ne 0 ]; then
+    _wd "---------- SYSTEM"
 
     # --- Check system status
     systemStatus="$(_get $OID_systemStatus)"
@@ -291,7 +316,7 @@ if [ $FLAG_SYSTEM -ne 0 ]; then
     else
         systemStatus="Normal"
     fi
-    _wd "System Status:     $systemStatus"
+    _wd "System Status:" "$systemStatus"
 
     # --- Check power status
     powerStatus="$(_get $OID_powerStatus)"
@@ -303,7 +328,7 @@ if [ $FLAG_SYSTEM -ne 0 ]; then
     else
         powerStatus="Normal"
     fi
-    _wd "Power Status:      $powerStatus"
+    _wd "Power Status:" "$powerStatus"
 
 
     # --- Check system fan status
@@ -315,7 +340,7 @@ if [ $FLAG_SYSTEM -ne 0 ]; then
     else
         systemFanStatus="Normal"
     fi
-    _wd "System Fan Status: $systemFanStatus"
+    _wd "System Fan Status:" "$systemFanStatus"
 
 
     # --- Check CPU fan status
@@ -327,36 +352,20 @@ if [ $FLAG_SYSTEM -ne 0 ]; then
     else
         CPUFanStatus="Normal"
     fi
-    _wd "CPU Fan Status:    $CPUFanStatus"
-    _wd ""
+    _wd "CPU Fan Status:" "$CPUFanStatus"
 fi
 
 # ---------- check temperature
 if [ $FLAG_TEMPERATURE -ne 0 ]; then
     # --- Show temperature
     DeviceTemperature=$(_get $OID_temp)
-    _wd "NAS temperature:   $DeviceTemperature °C"
-    _wd ""
+    _wd "NAS temperature:" "$DeviceTemperature °C"
 
     if [ $FLAG_SINGLECHECK -ne 0 ]; then
         _add_status "NAS temperature: $DeviceTemperature °C"
         ph.perfadd "temp" "$DeviceTemperature"
     fi
-fi
-
-# ---------- check update
-if [ $FLAG_UPDATE -ne 0 ]; then
-    typeset -i DSMupdate=$(_get $OID_DSMUpdateAvailable)
-
-    # test $FLAG_SINGLECHECK -ne 0 || ( _wd "Update available:  ${aStatusUpgrade[$DSMupdate]} ($DSMupdate)"; _wd "" )
-    _wd "Update available:  ${aStatusUpgrade[$DSMupdate]} ($DSMupdate)"; 
-    _wd ""
-    if [ $DSMupdate -eq 1 ] ; then
-        ph.setStatus "warning"
-        _add_status "Update available"
-    else
-        test $FLAG_SINGLECHECK -ne 0 && _add_status "Up to date"
-    fi
+    test $FLAG_DISK -ne 0 && _wd ""
 fi
 
 # ---------- Check all disk status + volume + raid
@@ -365,7 +374,8 @@ if [ $FLAG_DISK -ne 0 ]; then
     RAIDStatus=$(_get $OID_RAIDStatus)
     DISKOK=1
 
-    _wd "Number of disks:   $nbDisk"
+    _wd "---------- STORAGE"
+    _wd "Number of disks:" "$nbDisk"
     for i in $(seq 1 $nbDisk);
     do
         diskID[$i]=$(_get $OID_diskID.$(($i-1)))
@@ -382,13 +392,13 @@ if [ $FLAG_DISK -ne 0 ]; then
             _add_status "problem with ${diskID[$i]} (model:${diskModel[$i]}) status:${diskStatus[$i]} temperature:${diskTemp[$i]} °C"
         fi
 
-        _wd "${diskID[$i]} (model:${diskModel[$i]}) status: ${diskStatus[$i]} ($idiskStatus) temperature: ${diskTemp[$i]} °C"
+        _wd "  ${diskID[$i]} (model:${diskModel[$i]}) status: ${diskStatus[$i]} ($idiskStatus) temperature: ${diskTemp[$i]} °C"
     done
 
 
     # --- Check all RAID volume status
     _wd ""
-    _wd "Number of RAID volume: $nbRAID"
+    _wd "Number of RAID volumes:" "$nbRAID"
     for i in $(seq 1 $nbRAID);
     do
         RAIDName[$i]=$(_get $OID_RAIDName.$(($i-1)))
@@ -406,7 +416,7 @@ if [ $FLAG_DISK -ne 0 ]; then
             ph.setStatus "critical"
             _add_status "RAID status: ($RAIDName ): $RAIDStatus[$i] "
         fi
-        _wd "${RAIDName[$i]} status: ${RAIDStatus[$i]} ($iRAIDStatus) - size $iRAIDSize GB, free $iRAIDFree GB (${iFree}%)"
+        _wd "  ${RAIDName[$i]} status: ${RAIDStatus[$i]} ($iRAIDStatus) - size $iRAIDSize GB, free $iRAIDFree GB (${iFree}%)"
     done
 
     if [ $DISKOK -eq 1 ]; then