diff --git a/tests/create-mnaio.sh b/tests/create-mnaio.sh
index c1e56d45..7bed9e2c 100755
--- a/tests/create-mnaio.sh
+++ b/tests/create-mnaio.sh
@@ -53,13 +53,13 @@ export DEPLOY_OSA="true"
 export PRE_CONFIG_OSA="true"
 export RUN_OSA="false"
 export CONFIGURE_OPENSTACK="false"
-export DATA_DISK_DEVICE="sdb"
 export CONFIG_PREROUTING="false"
 export OSA_PORTS="6080 6082 443 80 8443"
 export RPC_BRANCH="${RE_JOB_CONTEXT}"
 export DEFAULT_MIRROR_HOSTNAME=mirror.rackspace.com
 export DEFAULT_MIRROR_DIR=/ubuntu
 export INFRA_VM_SERVER_RAM=16384
+export MNAIO_ANSIBLE_PARAMETERS="-e mnaio_data_disk=sdb"
 
 # If series is newton, use rcbops fork of OSA
 if [ "${RE_JOB_SERIES}" == "newton" ]; then