diff --git a/manifests/backend/dellemc_unity.pp b/manifests/backend/dellemc_unity.pp
index 79d0eec8..53c13b5a 100644
--- a/manifests/backend/dellemc_unity.pp
+++ b/manifests/backend/dellemc_unity.pp
@@ -116,8 +116,8 @@ define manila::backend::dellemc_unity (
     "${share_backend_name}/backend_availability_zone":    value => $backend_availability_zone;
     "${share_backend_name}/emc_share_backend":            value => $emc_share_backend;
     "${share_backend_name}/unity_server_meta_pool":       value => $unity_server_meta_pool;
-    "${share_backend_name}/unity_share_data_pools":       value => $unity_share_data_pools;
-    "${share_backend_name}/unity_ethernet_ports":         value => $unity_ethernet_ports;
+    "${share_backend_name}/unity_share_data_pools":       value => join(any2array($unity_share_data_pools), ',');
+    "${share_backend_name}/unity_ethernet_ports":         value => join(any2array($unity_ethernet_ports), ',');
     "${share_backend_name}/network_plugin_ipv6_enabled":  value => $network_plugin_ipv6_enabled;
     "${share_backend_name}/emc_ssl_cert_verify":          value => $emc_ssl_cert_verify;
     "${share_backend_name}/emc_ssl_cert_path":            value => $emc_ssl_cert_path;
diff --git a/manifests/backend/dellemc_vmax.pp b/manifests/backend/dellemc_vmax.pp
index 2ec3d6eb..44a4a61e 100644
--- a/manifests/backend/dellemc_vmax.pp
+++ b/manifests/backend/dellemc_vmax.pp
@@ -100,8 +100,8 @@ define manila::backend::dellemc_vmax (
     "${share_backend_name}/backend_availability_zone":    value => $backend_availability_zone;
     "${share_backend_name}/emc_share_backend":            value => $emc_share_backend;
     "${share_backend_name}/vmax_server_container":        value => $vmax_server_container;
-    "${share_backend_name}/vmax_share_data_pools":        value => $vmax_share_data_pools;
-    "${share_backend_name}/vmax_ethernet_ports":          value => $vmax_ethernet_ports;
+    "${share_backend_name}/vmax_share_data_pools":        value => join(any2array($vmax_share_data_pools), ',');
+    "${share_backend_name}/vmax_ethernet_ports":          value => join(any2array($vmax_ethernet_ports), ',');
   }
 
   ensure_resource('package','nfs-utils',{
diff --git a/manifests/backend/dellemc_vnx.pp b/manifests/backend/dellemc_vnx.pp
index 7297134b..334c7693 100644
--- a/manifests/backend/dellemc_vnx.pp
+++ b/manifests/backend/dellemc_vnx.pp
@@ -121,8 +121,8 @@ define manila::backend::dellemc_vnx (
     "${share_backend_name}/backend_availability_zone":    value => $backend_availability_zone;
     "${share_backend_name}/emc_share_backend":            value => $emc_share_backend;
     "${share_backend_name}/vnx_server_container":         value => $vnx_server_container;
-    "${share_backend_name}/vnx_share_data_pools":         value => $vnx_share_data_pools;
-    "${share_backend_name}/vnx_ethernet_ports":           value => $vnx_ethernet_ports;
+    "${share_backend_name}/vnx_share_data_pools":         value => join(any2array($vnx_share_data_pools), ',');
+    "${share_backend_name}/vnx_ethernet_ports":           value => join(any2array($vnx_ethernet_ports), ',');
     "${share_backend_name}/network_plugin_ipv6_enabled":  value => $network_plugin_ipv6_enabled;
     "${share_backend_name}/emc_ssl_cert_verify":          value => $emc_ssl_cert_verify;
     "${share_backend_name}/emc_ssl_cert_path":            value => $emc_ssl_cert_path;