diff --git a/benchmark/config.sh b/benchmark/config.sh
index 4ae04015c..9082b5f7b 100755
--- a/benchmark/config.sh
+++ b/benchmark/config.sh
@@ -29,13 +29,12 @@ elif [[ "m" == ${hostname:0:1} ]]; then
     export WD="/mnt/lustre01/work/ku0598/k202107/git/ddn-ime-evaluation/benchmark"
     export NODES=()
 else
-    echo "Cluster $hostname is not supported. Quitting."
+    echo "Configuration faile: Cluster $hostname is not supported. Quitting."
     exit 1
 fi
 
 
-# Cache = 32108MB
-# DATASIZE = 76800MB
+# Lustre cache on DDN cluster ist 32108MB. Test file has to be at least twice as large therefore: DATASIZE = 76800MB
 DATASIZE=$((4800 * 1024 * 1024 * 16))
 
 COUNT_ARR=( $(seq 3) )