diff --git a/conf/garage.toml b/conf/garage.toml
index 2cae1f9..beb3a68 100644
--- a/conf/garage.toml
+++ b/conf/garage.toml
@@ -1,5 +1,5 @@
-metadata_dir = "/opt/yunohost/__APP_NAME__/metadata"
-data_dir = "__DATA_DIR__" 
+metadata_dir = "/opt/yunohost/__APP__/metadata"
+data_dir = "__DATADIR__" 
 
 block_size = 1048576
 block_manager_background_tranquility = 2
@@ -10,14 +10,13 @@ compression_level = 1
 
 # openssl rand -hex 32
 rpc_secret = "__RPC_SECRET__"
-# LE PORT DOIT ÊTRE LE MÊME SUR TOUS LES NOEUDS (port interne)
 rpc_bind_addr = "[::]:__PORT__"
 # Le port peut être différent (eg NAT) mais doit rediriger sur le
 # port de rpc_bind_addr
-rpc_public_addr = "__IP__:__PORT__"
+#rpc_public_addr = "__IP__:__PORT__"
 
 bootstrap_peers = [
-    __SERVER_AMI__",
+    __BOOTSTRAP_PEERS_VAR__
 ]
 
 [s3_api]
@@ -27,7 +26,7 @@ api_bind_addr = "[::]:__PORT_API__"
 s3_region = "garage"
 
 [s3_web]
-bind_addr = "[::]:__PORT_WEB"
+bind_addr = "[::]:__PORT_WEB__"
 root_domain = ".web.garage.localhost"
 index = "index.html"
 
diff --git a/conf/mount_disk.sh b/conf/mount_disk.sh
index 5ddf0e8..59a1b60 100755
--- a/conf/mount_disk.sh
+++ b/conf/mount_disk.sh
@@ -1,16 +1,19 @@
 #!/bin/bash
-datadir=$1
-format=$2
-i=0
-while $(fdisk -l /dev/nbd$i  1&>2 /dev/null)
-do
-	i=$(( i + 1 ))
-done
-echo $i
-modprobe nbd max_part=$(( i + 1 ))
-qemu-nbd --connect /dev/nbd$i $datadir/garage.qcow2
-if [[ "$format" = "true" ]]
+if [ "$VIRTUALISATION" = "true" ] 
 then
-    mkfs.ext4 /dev/nbd$i > /dev/null
+    datadir=__DATADIR__
+    format=$1
+    i=0
+    while $(fdisk -l /dev/nbd$i  1&>2 /dev/null)
+    do
+        i=$(( i + 1 ))
+    done
+    echo $i
+    modprobe nbd max_part=$(( i + 1 ))
+    qemu-nbd --connect /dev/nbd$i $datadir/garage.qcow2
+    if [[ "$format" = "true" ]]
+    then
+        mkfs.ext4 /dev/nbd$i > /dev/null
+    fi
+    mount /dev/nbd$i $datadir/data/
 fi
-mount /dev/nbd$i $datadir/data/
diff --git a/conf/systemd.service b/conf/systemd.service
index b30bee9..0702044 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -5,12 +5,10 @@ Wants=network-online.target
 
 [Service]
 User=__APP__
-Environment='RUST_LOG=garage=info' 'RUST_BACKTRACE=1'
-ExecStartPre=+__FINALPATH__/mount_disk.sh __FINALPATH__ __NBD_INDEX__
+Environment='RUST_LOG=garage=info' 'VIRTUALISATION=__VIRTUALISATION__'   'RUST_BACKTRACE=1'
+ExecStartPre=+__FINALPATH__/mount_disk.sh 
 ExecStart=__FINALPATH__/garage -c __FINALPATH__/garage.toml server
-StateDirectory=garage
-DynamicUser=true
-ProtectHome=true
+WorkingDirectory=__FINALPATH__/
 NoNewPrivileges=true
 StandardOutput=append:/var/log/__APP__/__APP__.log
 StandardError=inherit
@@ -21,7 +19,7 @@ StandardError=inherit
 # Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html
 PrivateTmp=yes
 PrivateDevices=yes
-RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+# RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
 RestrictNamespaces=yes
 RestrictRealtime=yes
 DevicePolicy=closed
diff --git a/conf/umount_disk.sh b/conf/umount_disk.sh
index c6cc5ed..1e11d56 100755
--- a/conf/umount_disk.sh
+++ b/conf/umount_disk.sh
@@ -1,4 +1,7 @@
 #!/bin/bash
-nbd=$1
-umount  /dev/nbd$nbd
-qemu-nbd --disconnect  /dev/nbd$nbd
+if [ "$VIRTUALISATION" = "true" ] 
+then
+    nbd=__NBD_INDEX__
+    umount  /dev/nbd$nbd
+    qemu-nbd --disconnect  /dev/nbd$nbd
+fi
diff --git a/manifest.json b/manifest.json
index 7902091..4af1b22 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "S3 storage",
         "fr": "stockage S3"
     },
-    "version": "0.7.2.1~ynh1",
+    "version": "0.7.3~ynh1",
     "url": "https://garagehq.deuxfleurs.fr/",
     "upstream": {
         "license": "free",
@@ -32,7 +32,7 @@
                 "type": "domain"
             },
             { 
-                "name":"rpc-secret",
+                "name":"rpc_secret",
                 "type":"string",
                 "ask": {
                     "en": "UUID of the network (rpc-secret) ",
@@ -42,7 +42,7 @@
                   "example": "1799bccfd7411eddcf9ebd316bc1f5287ad12a68094e1c6ac6abde7e6feae1ec"
             },
             {
-                "name": "bootstrap-peers",
+                "name": "bootstrap_peers",
                 "type": "string",
                 "example": "1799bccfd7411eddcf9ebd316bc1f5287ad12a68094e1c6ac6abde7e6feae1ec@127.0.0.1:3901",
                 "optional": true,
@@ -53,7 +53,7 @@
             },
             { 
                 "name": "weight",
-                "type": "integer",
+                "type": "string",
                 "ask": {
                     "en": "number of G to allow",
                     "fr": "nombre de G à allouer"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0642659..5130faa 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -3,14 +3,14 @@
 #=================================================
 # COMMON VARIABLES
 #=================================================
-pkg_dependencies="qemu-utils"
+pkg_dependencies_virtualisation="qemu-utils"
 
 #=================================================
 # PERSONAL HELPERS
 #=================================================
 
 
-GARAGE_VERSION="0.7.2.1"
+GARAGE_VERSION="0.7.3"
 
 get_ip() {
   curl ip.me
@@ -37,9 +37,8 @@ install_garage () {
       ynh_die --message="Unsupported architecture \"$architecture\""
       ;;
   esac
-  wget https://garagehq.deuxfleurs.fr/_releases/v$GARAGE_VERSION/$arch-unknown-linux-musl/garage -O "$app" 2>&1 >/dev/null
-    chmod +x "$app"
-  fi
+  wget https://garagehq.deuxfleurs.fr/_releases/v$GARAGE_VERSION/$arch-unknown-linux-musl/garage -O garage 2>&1 >/dev/null
+    chmod +x garage
 }
 
 init_garage() {
@@ -54,145 +53,65 @@ apply_layout "$garage_command"
 }
 
 apply_layout() {
-	$garage_command=$1
-	$garage_command -c garage.toml layout show 2>/dev/null | grep "--version"
-	if [ $? -eq 0 ] 
+	garage_command=$1
+	
+	if [ $($garage_command -c garage.toml layout show 2>/dev/null | grep -- --version)  ] 
 	then
 		layout_version=$($garage_command layout show 2>/dev/null | grep -Po -- "(?<=--version).*" | head -1 | xargs)
 		$garage_command layout apply --version $layout_version
 	else
-		return 1
+		return 0
 	fi
 }
 #=================================================
 # EXPERIMENTAL HELPERS
 #=================================================
 
-# Send an email to inform the administrator
-#
-# usage: ynh_send_readme_to_admin --app_message=app_message [--recipients=recipients] [--type=type]
-# | arg: -m --app_message= - The file with the content to send to the administrator.
-# | arg: -r, --recipients= - The recipients of this email. Use spaces to separate multiples recipients. - default: root
-#	example: "root admin@domain"
-#	If you give the name of a YunoHost user, ynh_send_readme_to_admin will find its email adress for you
-#	example: "root admin@domain user1 user2"
-# | arg: -t, --type= - Type of mail, could be 'backup', 'change_url', 'install', 'remove', 'restore', 'upgrade'
-#
-# Requires YunoHost version 4.1.0 or higher.
 ynh_send_readme_to_admin() {
-	# Declare an array to define the options of this helper.
-	declare -Ar args_array=( [m]=app_message= [r]=recipients= [t]=type= )
-	local app_message
-	local recipients
-	local type
-	# Manage arguments with getopts
+    local app_message="${1:-...No specific information...}"
+    local recipients="${2:-root}"
 
-	ynh_handle_getopts_args "$@"
-	app_message="${app_message:-}"
-	recipients="${recipients:-root}"
-	type="${type:-install}"
+    # Retrieve the email of users
+    find_mails () {
+        local list_mails="$1"
+        local mail
+        local recipients=" "
+        # Read each mail in argument
+        for mail in $list_mails
+        do
+            # Keep root or a real email address as it is
+            if [ "$mail" = "root" ] || echo "$mail" | grep --quiet "@"
+            then
+                recipients="$recipients $mail"
+            else
+                # But replace an user name without a domain after by its email
+                if mail=$(ynh_user_get_info "$mail" "mail" 2> /dev/null)
+                then
+                    recipients="$recipients $mail"
+                fi
+            fi
+        done
+        echo "$recipients"
+    }
+    recipients=$(find_mails "$recipients")
 
-	# Get the value of admin_mail_html
-	admin_mail_html=$(ynh_app_setting_get $app admin_mail_html)
-	admin_mail_html="${admin_mail_html:-0}"
+    local mail_subject="☁️🆈🅽🅷☁️: \`$app\` was just installed!"
 
-	# Retrieve the email of users
-	find_mails () {
-		local list_mails="$1"
-		local mail
-		local recipients=" "
-		# Read each mail in argument
-		for mail in $list_mails
-		do
-			# Keep root or a real email address as it is
-			if [ "$mail" = "root" ] || echo "$mail" | grep --quiet "@"
-			then
-				recipients="$recipients $mail"
-			else
-				# But replace an user name without a domain after by its email
-				if mail=$(ynh_user_get_info "$mail" "mail" 2> /dev/null)
-				then
-					recipients="$recipients $mail"
-				fi
-			fi
-		done
-		echo "$recipients"
-	}
-	recipients=$(find_mails "$recipients")
-
-	# Subject base
-	local mail_subject="☁️🆈🅽🅷☁️: \`$app\`"
-
-	# Adapt the subject according to the type of mail required.
-	if [ "$type" = "backup" ]; then
-		mail_subject="$mail_subject has just been backup."
-	elif [ "$type" = "change_url" ]; then
-		mail_subject="$mail_subject has just been moved to a new URL!"
-	elif [ "$type" = "remove" ]; then
-		mail_subject="$mail_subject has just been removed!"
-	elif [ "$type" = "restore" ]; then
-		mail_subject="$mail_subject has just been restored!"
-	elif [ "$type" = "upgrade" ]; then
-		mail_subject="$mail_subject has just been upgraded!"
-	else	# install
-		mail_subject="$mail_subject has just been installed!"
-	fi
-
-	ynh_add_config --template="$app_message" --destination="../conf/msg_to_send"
-
-	ynh_delete_file_checksum --file="../conf/msg_to_send"
-	local mail_message="This is an automated message from your beloved YunoHost server.
+    local mail_message="This is an automated message from your beloved YunoHost server.
 Specific information for the application $app.
-$(cat "../conf/msg_to_send")"
+$app_message"
 
-	# Store the message into a file for further modifications.
-	echo "$mail_message" > mail_to_send
+    # Define binary to use for mail command
+    if [ -e /usr/bin/bsd-mailx ]
+    then
+        local mail_bin=/usr/bin/bsd-mailx
+    else
+        local mail_bin=/usr/bin/mail.mailutils
+    fi
 
-	# If a html email is required. Apply html tags to the message.
- 	if [ "$admin_mail_html" -eq 1 ]
- 	then
-		# Insert 'br' tags at each ending of lines.
-		ynh_replace_string "$" "<br>" mail_to_send
-
-		# Insert starting HTML tags
-		sed --in-place '1s@^@<!DOCTYPE html>\n<html>\n<head></head>\n<body>\n@' mail_to_send
-
-		# Keep tabulations
-		ynh_replace_string "  " "\&#160;\&#160;" mail_to_send
-		ynh_replace_string "\t" "\&#160;\&#160;" mail_to_send
-
-		# Insert url links tags
-		ynh_replace_string "__URL_TAG1__\(.*\)__URL_TAG2__\(.*\)__URL_TAG3__" "<a href=\"\2\">\1</a>" mail_to_send
-
-		# Insert finishing HTML tags
-		echo -e "\n</body>\n</html>" >> mail_to_send
-
-	# Otherwise, remove tags to keep a plain text.
-	else
-		# Remove URL tags
-		ynh_replace_string "__URL_TAG[1,3]__" "" mail_to_send
-		ynh_replace_string "__URL_TAG2__" ": " mail_to_send
-	fi
-
-	# Define binary to use for mail command
-	if [ -e /usr/bin/bsd-mailx ]
-	then
-		local mail_bin=/usr/bin/bsd-mailx
-	else
-		local mail_bin=/usr/bin/mail.mailutils
-	fi
-
-	if [ "$admin_mail_html" -eq 1 ]
-	then
-		content_type="text/html"
-	else
-		content_type="text/plain"
-	fi
-
-	# Send the email to the recipients
-	cat mail_to_send | $mail_bin -a "Content-Type: $content_type; charset=UTF-8" -s "$mail_subject" "$recipients"
+    # Send the email to the recipients
+    echo "$mail_message" | $mail_bin -a "Content-Type: text/plain; charset=UTF-8" -s "$mail_subject" "$recipients"
 }
-
 #=================================================
 # FUTURE OFFICIAL HELPERS
 #=================================================
diff --git a/scripts/backup b/scripts/backup
index 91261a6..c89a92e 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -56,7 +56,7 @@ ynh_backup --src_path="$final_path"
 # BACKUP THE DATA DIR
 #=================================================
 
-ynh_backup --src_path="$datadir" --is_big
+#ynh_backup --src_path="$datadir/data" --is_big
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
diff --git a/scripts/install b/scripts/install
index 4b69c0a..b88eb6b 100755
--- a/scripts/install
+++ b/scripts/install
@@ -34,6 +34,7 @@ bootstrap_peers=$YNH_APP_ARG_BOOTSTRAP_PEERS
 datadir=$YNH_APP_ARG_DATADIR
 weight=$YNH_APP_ARG_WEIGHT
 
+
 ### If it's a multi-instance app, meaning it can be installed several times independently
 ### The id of the app as stated in the manifest is available as $YNH_APP_ID
 ### The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2"...)
@@ -73,6 +74,9 @@ fi
 if [ -n "$bootstrap_peers" ] 
 then
 	echo "$bootstrap_peers" | grep -E '[0-9a-f]{64}@(\b25[0-5]|\b2[0-4][0-9]|\b[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}:3901' || ynh_die --message="friend server id must have id with the following form : 1799bccfd7411eddcf9ebd316bc1f5287ad12a68094e1c6ac6abde7e6feae1ec@192.168.1.1:3901"
+	bootstrap_peers_var="\"$bootstrap_peers\","
+else
+	bootstrap_peers_var=""
 fi
 
 if [ "$datadir" = "/home/yunohost.app/__APP_NAME__/data" ]
@@ -83,6 +87,19 @@ fi
 # Register (book) web path
 ynh_webpath_register --app=$app --domain=$domain --path_url="/"
 
+#=================================================
+# LOOKING FOR VIRTUALISATION
+#=================================================
+ynh_script_progression --message="Checking virtualisation availability…" --time --weight=1
+
+if [  "$(which modprobe)" = ""  ] 
+then
+	virtualisation=false
+else
+	virtualisation=true
+fi
+ynh_app_setting_set --app=$app --key=virtualisation --value=true
+
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
@@ -108,15 +125,18 @@ ynh_script_progression --message="Finding available ports..." --time --weight=1
 
 # Find an available port
 
-port=$(ynh_find_port --port=3901)
-port_api=$(ynh_find_port --port=3900)
-port_web=$(ynh_find_port --port=3902)
-port_admin=$(ynh_find_port --port=3903)
-
+port=$(ynh_find_port --port=4000)
 ynh_app_setting_set --app=$app --key=port --value=$port
+port_api=$(ynh_find_port --port=5000)
 ynh_app_setting_set --app=$app --key=port_api --value=$port_api
+port_web=$(ynh_find_port --port=6000)
 ynh_app_setting_set --app=$app --key=port_web --value=$port_web
+port_admin=$(ynh_find_port --port=7000)
 ynh_app_setting_set --app=$app --key=port_admin --value=$port_admin
+
+ynh_print_warn --message="port : $port port_api : $port_api port_web : $port_web port_admin : $port_admin"
+
+
 # Optional: Expose this port publicly
 # (N.B.: you only need to do this if the app actually needs to expose the port publicly.
 # If you do this and the app doesn't actually need you are CREATING SECURITY HOLES IN THE SERVER !)
@@ -137,8 +157,10 @@ ynh_script_progression --message="Installing dependencies..." --time --weight=1
 ###		- Remove the variable "pkg_dependencies" in _common.sh
 ###		- As well as the section "REINSTALL DEPENDENCIES" in the restore script
 ###		- And the section "UPGRADE DEPENDENCIES" in the upgrade script
- ynh_install_app_dependencies $pkg_dependencies
- 
+if [ "$virtualisation" = "true" ]
+then
+	ynh_install_app_dependencies $pkg_dependencies_virtualisation
+fi 
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
@@ -156,7 +178,9 @@ ynh_script_progression --message="Setting up source files..." --time --weight=1
 ### downloaded from an upstream source, like a git repository.
 ### `ynh_setup_source` use the file conf/app.src
 
+mkdir -p $final_path
 ynh_app_setting_set --app=$app --key=final_path --value=$final_path
+
 # Download, check integrity, uncompress and patch the source from app.src
 pushd $final_path
 	install_garage
@@ -212,10 +236,14 @@ mkdir -p $datadir/data
 #=================================================
 # create data partition
 #=================================================
-# to be sure to not exceed size limit, i use a virtual disk with a fix size to have a max limit size.
-qemu-img create -f qcow2 $datadir/garage_data.qcow2 "$weight"G
-nbd_index=$($final_path/mount_disk.sh "$datadir" true)
-ynh_app_setting_set --app=$app --key=nbd_index --value=$nbd_index
+nbd_index=127
+if [ "$virtualisation" = "true" ]
+then
+	# to be sure to not exceed size limit, i use a virtual disk with a fix size to have a max limit size.
+	qemu-img create -f qcow2 $datadir/garage_data.qcow2 "$weight"G
+	nbd_index=$($final_path/mount_disk.sh true)
+	ynh_app_setting_set --app=$app --key=nbd_index --value=$nbd_index
+fi
 
 # FIXME: this should be managed by the core in the future
 # Here, as a packager, you may have to tweak the ownerhsip/permissions
@@ -227,7 +255,10 @@ chmod 750 "$datadir"
 chmod -R o-rwx "$datadir"
 chown -R $app:$app "$datadir"
 
-$final_path/umount_disk.sh $nbd_index
+if [ "$virtualisation" = "true" ]
+then
+	$final_path/umount_disk.sh $nbd_index
+fi
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
@@ -245,13 +276,16 @@ ynh_script_progression --message="Adding a configuration file..." --time --weigh
 ###
 ### Check the documentation of `ynh_add_config` for more info.
 
-ynh_add_config --template="garage.toml" --destination="$final_path/garage.toml"
+	ynh_add_config --template="mount_disk.sh" --destination="$final_path/mount_disk.sh"
+	ynh_add_config --template="umount_disk.sh" --destination="$final_path/umount_disk.sh"
+	ynh_add_config --template="garage.toml" --destination="$final_path/garage.toml"
+	chmod +x "$final_path/mount_disk.sh" "$final_path/umount_disk.sh"
 
 # FIXME: this should be handled by the core in the future
 # You may need to use chmod 600 instead of 400,
 # for example if the app is expected to be able to modify its own config
-chmod 400 "$final_path/garage.toml"
-chown $app:$app "$final_path/garag.toml"
+chmod 600 "$final_path/garage.toml"
+chown $app:$app "$final_path/garage.toml"
 
 ### For more complex cases where you want to replace stuff using regexes,
 ### you shoud rely on ynh_replace_string (which is basically a wrapper for sed)
@@ -311,7 +345,7 @@ ynh_script_progression --message="Integrating service in YunoHost..." --time --w
 ###		- As well as the section "INTEGRATE SERVICE IN YUNOHOST" in the restore script
 ###		- And the section "INTEGRATE SERVICE IN YUNOHOST" in the upgrade script
 
-yunohost service add --needs_exposed_ports $app --description="s3 storage" --log="/var/log/$app/$app.log"
+yunohost service add --needs_exposed_ports $port --description="s3 storage" --log="/var/log/$app/$app.log" $app
 
 ### Additional options starting with 3.8:
 ###
@@ -346,6 +380,7 @@ ynh_script_progression --message="Starting a systemd service..." --time --weight
 # Start a systemd service
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
 
+
 #=================================================
 # SETUP SSOWAT
 #=================================================
@@ -368,10 +403,11 @@ ynh_systemd_action --service_name=nginx --action=reload
 #=================================================
 ynh_script_progression --message="Configuring garage..." --time --weight=1
 
+garage_command="$final_path/garage -c $final_path/garage.toml"
+
 node_id=$($garage_command node id -q | cut -d '@' -f1)
 ynh_app_setting_set --app=$app --key=node_id --value=node_id
 
-garage_command="$garage_path/garage -c $garage_path/garage.toml"
 
 init_garage "$garage_command" "$node_id" "$weight" "$domain" 
 
diff --git a/scripts/remove b/scripts/remove
index 0f79639..5bb099e 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -23,10 +23,13 @@ port_api=$(ynh_app_setting_get --app=$app --key=port_api)
 port_web=$(ynh_app_setting_get --app=$app --key=port_web)
 datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 bootstrap_peers=$(ynh_app_setting_get --app=$app --key=bootstrap_peers)
-nbd_index=$(ynh_app_setting_get --app=$app --key=nbd_index)
 node_id=$(ynh_app_setting_get --app=$app --key=node_id)
-
-
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+virtualisation=$(ynh_app_setting_get --app=$app --key=virtualisation)
+if [ "$virtualisation" = "true" ]
+then
+	nbd_index=$(ynh_app_setting_get --app=$app --key=nbd_index)
+fi
 #=================================================
 # REMOVE NODE CONFIGURATION
 #=================================================
@@ -35,7 +38,7 @@ $final_path/garage -c $final_path/garage.toml layout remove "$node_id"
 apply_layout "$final_path/garage -c $final_path/garage.toml "
 if [ $? -ne 0 ]
 then
-	ynh_die --message="unable to remove the node. Maybe the number of node staying alive is not enough"
+	ynh_print_warn --message="unable to remove the node. Maybe the number of node staying alive is not enough"
 fi
 
 
@@ -69,14 +72,16 @@ ynh_script_progression --message="Removing logrotate configuration..." --time --
 ynh_remove_logrotate
 
 
-#=================================================
-# REMOVE VIRTUAL DISK
-#=================================================
-ynh_script_progression --message="umount virtual disk..." --time --weight=1
-
-# Remove the app directory securely
-$final_path/umount_disk.sh  $nbd_index
+if [ "$virtualisation" = "true" ]
+then
+	#=================================================
+	# REMOVE VIRTUAL DISK
+	#=================================================
+	ynh_script_progression --message="umount virtual disk..." --time --weight=1
 
+	# Remove the app directory securely
+	$final_path/umount_disk.sh  $nbd_index
+fi
 #=================================================
 # REMOVE APP MAIN DIR
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index b2cef2c..9ef479e 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -31,6 +31,8 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 datadir=$(ynh_app_setting_get --app=$app --key=datadir)
+weight=$(ynh_app_setting_get --app=$app --key=weight)
+virtualisation=$(ynh_app_setting_get --app=$app --key=virtualisation)
 
 
 #=================================================
@@ -73,9 +75,18 @@ chown -R $app:$app "$final_path"
 #=================================================
 ynh_script_progression --message="Restoring the data directory..." --time --weight=1
 
-ynh_restore_file --origin_path="$datadir" --not_mandatory
+mkdir -p "$datadir/data"
+
+if [ "$virtualisation" = "true" ]
+then
+	# to be sure to not exceed size limit, i use a virtual disk with a fix size to have a max limit size.
+	qemu-img create -f qcow2 $datadir/garage_data.qcow2 "$weight"G
+	nbd_index=$($final_path/mount_disk.sh "$datadir" true)
+	ynh_app_setting_set --app=$app --key=nbd_index --value=$nbd_index
+fi
+
+#ynh_restore_file --origin_path="$datadir/data" --not_mandatory
 
-mkdir -p $datadir
 
 # FIXME: this should be managed by the core in the future
 # Here, as a packager, you may have to tweak the ownerhsip/permissions