diff --git a/README.md b/README.md
index 8301328..1cfa695 100644
--- a/README.md
+++ b/README.md
@@ -101,6 +101,30 @@ From command line:
 
 `sudo yunohost app upgrade seafile -u https://github.com/YunoHost-Apps/seafile_ynh`
 
+Backup
+------
+
+This app use now the core-only feature of the backup. To keep the integrity of the data and to have a better guarantee of the restoration is recommended to proceed like this:
+
+- Stop seafile service with theses following command:
+```
+systemctl stop seafile.service seahub.service
+```
+- Launch the backup of seafile with this following command:
+```
+yunohost backup create --app seafile
+```
+- Do a backup of your data with your specific strategy (could be with rsync, borg backup or just cp).
+- Restart the seafile service with theses command:
+```
+systemctl start seafile.service seahub.service
+```
+
+Remove
+------
+
+Due of the backup core only feature the data directory in `/home/yunohost.app/seafile-data` **is not removed**. It need to be removed manually to purge app user data.
+
 Developers infos
 ----------------
 
diff --git a/scripts/backup b/scripts/backup
index 6357471..8230271 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -22,6 +22,10 @@ db_pwd=$(ynh_app_setting_get --app $app --key mysqlpwd)
 final_path=$(ynh_app_setting_get --app $app --key final_path)
 seafile_user=$app
 
+if [ ! "$(systemctl status seafile)" =~ "Active: stoped" ] || [ ! "$(systemctl status seahub)" =~ "Active: stoped" ]; then
+    ynh_print_warn --message="It's hightly recommended to make your backup when the service is stoped. Please seafile service and seahub service with this command before to run the backup 'systemctl stop seafile.service seahub.service'"
+fi
+
 #=================================================
 # STANDARD BACKUP STEPS
 #=================================================
@@ -30,7 +34,7 @@ seafile_user=$app
 ynh_script_progression --message="Backing up code..." --weight=3
 ynh_backup --src_path $final_path
 ynh_script_progression --message="Backing up user data..." --weight=10
-ynh_backup --src_path /home/yunohost.app/seafile-data --dest_path "data"
+ynh_backup --src_path /home/yunohost.app/seafile-data --dest_path "data" --is_big 1
 ynh_script_progression --message="Backing up configuration..."
 ynh_backup --src_path /etc/nginx/conf.d/$domain.d/${app}.conf
 ynh_backup --src_path /etc/systemd/system/seafile.service
diff --git a/scripts/remove b/scripts/remove
index 9ec4ae7..84e632b 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -44,8 +44,6 @@ ynh_secure_remove --file=/var/log/seafile
 ynh_script_progression --message="Removing code..."
 ynh_secure_remove --file=/var/www/$app
 ynh_secure_remove --file=/opt/yunohost/$app
-ynh_script_progression --message="Removing user data..."
-ynh_secure_remove --file=/home/yunohost.app/seafile-data
 ynh_secure_remove --file=/tmp/seahub_cache
 
 # Remove databases
@@ -82,4 +80,6 @@ ynh_script_progression --message="Removing seafile service..."
 yunohost service remove seafile
 yunohost service remove seahub
 
+ynh_print_info --message="Due of the backup core only feature the data directory in '/home/yunohost.app/seafile-data' was not removed. It need to be removed manually to purge app user data."
+
 ynh_script_progression --message="Removal of $app completed" --last