diff --git a/wally/suits/io/hdd.cfg b/wally/suits/io/hdd.cfg
index 4156171..17d0509 100644
--- a/wally/suits/io/hdd.cfg
+++ b/wally/suits/io/hdd.cfg
@@ -9,6 +9,9 @@
 NUM_ROUNDS=7
 NUMJOBS={% 1, 5, 10, 15, 20, 30, 40, 80 %}
 
+# this is critical for correct results in multy-node run
+randrepeat=0
+
 size=10G
 ramp_time=5
 runtime=30