diff --git a/README.md b/README.md
index 09a7aa6..f22c5c3 100644
--- a/README.md
+++ b/README.md
@@ -1,23 +1,22 @@
 # Borg backup role
-This role installs Borg backup on backupservers and clients. The role contains a wrapper-script 'borg-backup' to ease the usage on the client. Supported options include borg-backup info | init | list | backup | mount. Automysqlbackup will run as pre-backup command if it's installed.
+This role installs Borg backup on borgbackup\_servers and clients. The role contains a wrapper-script 'borg-backup' to ease the usage on the client. Supported options include borg-backup info | init | list | backup | mount. Automysqlbackup will run as pre-backup command if it's installed.
 The role supports both self hosted and rsync.net as Borg server.
 
 It's possible to configure append-only repositories to secure the backups against deletion from the client.
 
 ## Required variables
-Define a group backupservers in your inventory with one or multiple hosts.
+Define a group borgbackup\_servers in your inventory with one or multiple hosts. The group borgbackup\_management is only necessary if you want to enable append-only mode and prune the backups from a secured hosts.
 ```
-infra:
-[backupservers]
+[borgbackup_servers]
 backup1.fiaas.co
 
 [borgbackup_management]
 supersecurehost
 ```
 
-group\_vars/all.yml:
+Define group- or hostvars for your backup endpoints and retention:
 ```
-backupservers:
+borgbackup_servers:
   - fqdn: backup1.fiaas.co
     user: borgbackup
     type: normal
@@ -30,9 +29,14 @@ backupservers:
     home: ""
     pool: repos
     options: "--remote-path=borg1"
+
+borgbackup_retention:
+  hourly: 12
+  daily: 7
+  weekly: 4
+  monthly: 6
+  yearly: 1
 ```
-Contains the list of server you want to use on a certain client.
-Allows to override backup servers on group or host level.
 *WARNING: the trailing / in item.home is required.*
 
 Define a borg\_passphrase for every host.
diff --git a/tasks/borg-client.yml b/tasks/borg-client.yml
index 09a89a4..7227a77 100644
--- a/tasks/borg-client.yml
+++ b/tasks/borg-client.yml
@@ -28,7 +28,7 @@
     key_options: 'command="cd {{ item.home }}{{ item.pool }}/{{ inventory_hostname }};borg serve {% if borgbackup_appendonly %}--append-only {% endif %}--restrict-to-path {{ item.home }}/{{ item.pool }}/{{ inventory_hostname }}",no-port-forwarding,no-X11-forwarding,no-pty,no-agent-forwarding,no-user-rc'
   delegate_to: "{{ item.fqdn }}"
   when: item.type == 'normal'
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
 
 # rsync.net has no python, so we can only use raw to manage ssh keys - workaround with local tmp file
 - name: client | get rsync.net authorized_keys file
@@ -36,7 +36,7 @@
   delegate_to: localhost
   become: no
   when: item.type == 'rsync.net'
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   changed_when: false
 
 - name: client | modify local rsync.net authorized_keys
@@ -49,7 +49,7 @@
   delegate_to: localhost
   become: no
   when: item.type == 'rsync.net'
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   register: authkeys
 
 - name: client | upload local authorized_keys to rsync.net
@@ -57,7 +57,7 @@
   delegate_to: localhost
   become: no
   when: item.type == 'rsync.net' and authkeys.changed
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
 
 - name: client | remove tmp authorized_keys files
   file:
@@ -65,7 +65,7 @@
     state: absent
   delegate_to: localhost
   become: no
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   when: authkeys.changed
   changed_when: false
 
diff --git a/tasks/borg-server.yml b/tasks/borg-server.yml
index 8127678..45e47f6 100644
--- a/tasks/borg-server.yml
+++ b/tasks/borg-server.yml
@@ -8,7 +8,7 @@
     mode: "0755"
     url: "{{ borgbackup_download_url }}"
   delegate_to: "{{ item.fqdn }}"
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   when: item.type == 'normal'
 
 - name: server | create user
@@ -18,7 +18,7 @@
     home: "{{ item.home }}"
     createhome: "yes"
   delegate_to: "{{ item.fqdn }}"
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   when: item.type == 'normal'
 
 - name: server | create directories
@@ -28,4 +28,4 @@
     owner: "{{ item.user }}"
     group: "{{ item.user }}"
     mode: "0770"
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
diff --git a/tasks/main.yml b/tasks/main.yml
index 357a756..1bcdef8 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -2,17 +2,17 @@
 - include: install.yml
   when: >
     borgbackup_required == True or
-    inventory_hostname in groups.backupservers
+    inventory_hostname in groups.borgbackup_servers
 
 - include: borg-server.yml
-  when: inventory_hostname in groups.backupservers
+  when: inventory_hostname in groups.borgbackup_servers
 
 - include: borg-client.yml
   when: >
     borgbackup_required == True and
-    inventory_hostname not in groups.backupservers
+    inventory_hostname not in groups.borgbackup_servers
 
 - include: management.yml
   when: >
     inventory_hostname in groups.borgbackup_management and
-    inventory_hostname not in groups.backupservers
+    inventory_hostname not in groups.borgbackup_servers
diff --git a/tasks/management.yml b/tasks/management.yml
index 0bb30fc..f27a43e 100644
--- a/tasks/management.yml
+++ b/tasks/management.yml
@@ -13,7 +13,7 @@
     key: "{{ borgbackup_management_sshkey }}"
   delegate_to: "{{ item.fqdn }}"
   when: item.type == 'normal'
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
 
 
 # rsync.net has no python, so we can only use raw to manage ssh keys - workaround with local tmp file
@@ -22,7 +22,7 @@
   delegate_to: localhost
   become: no
   when: item.type == 'rsync.net'
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   changed_when: false
 
 - name: management | modify local rsync.net authorized_keys
@@ -34,7 +34,7 @@
   delegate_to: localhost
   become: no
   when: item.type == 'rsync.net'
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   register: authkeys
 
 - name: management | upload local authorized_keys to rsync.net
@@ -42,7 +42,7 @@
   delegate_to: localhost
   become: no
   when: item.type == 'rsync.net' and authkeys.changed
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
 
 - name: management | remove tmp authorized_keys files
   file:
@@ -50,6 +50,6 @@
     state: absent
   delegate_to: localhost
   become: no
-  with_items: "{{ backupservers }}"
+  with_items: "{{ borgbackup_servers }}"
   when: authkeys.changed
   changed_when: false
diff --git a/templates/borg-backup.sh.j2 b/templates/borg-backup.sh.j2
index d01d21d..0e7bd60 100644
--- a/templates/borg-backup.sh.j2
+++ b/templates/borg-backup.sh.j2
@@ -14,7 +14,7 @@ fi
 if [ "$1" = "info" ]
   then
     if [ -z "$2" ]; then printf "run $0 with list and use the backup-tag to request information\n"; exit 1; fi
-{% for b in backupservers %}
+{% for b in borgbackup_servers %}
     REPOSITORY={{ b.user }}@{{ b.fqdn }}:{{ b.home }}{{ b.pool }}/{{ inventory_hostname }}
     /usr/local/bin/borg info $REPOSITORY::$2 {{ b.options }}
 {% endfor %}
@@ -26,7 +26,7 @@ if [ "$1" = "mount" ]
     if [ -z "$2" ]; then printf "Select the backup-server\n"; exit 1; fi
     if [ -z "$3" ]; then printf "Select the backup to mount\n"; exit 1; fi
     if [ -z "$4" ]; then printf "Select the path to mount the backup on\n"; exit 1; fi
-{% for b in backupservers %}
+{% for b in borgbackup_servers %}
     REPOSITORY={{ b.user }}@{{ b.fqdn }}:{{ b.home }}{{ b.pool }}/{{ inventory_hostname }}
     /usr/local/bin/borg mount $REPOSITORY::$3 $4 {{ b.options }}
     if [ "$?" = "0" ]; then printf "Backup mounted on $4, do not forget to unmount!\n"; fi
@@ -36,7 +36,7 @@ fi
 
 if [ "$1" = "list" ]
   then
-{% for b in backupservers %}
+{% for b in borgbackup_servers %}
     REPOSITORY={{ b.user }}@{{ b.fqdn }}:{{ b.home }}{{ b.pool }}/{{ inventory_hostname }}
     printf "Archives on {{ b.fqdn }} :\n"
     /usr/local/bin/borg list -v $REPOSITORY {{ b.options }}
@@ -46,7 +46,7 @@ fi
 
 if [ "$1" = "init" ]
   then
-{% for b in backupservers %}
+{% for b in borgbackup_servers %}
     REPOSITORY={{ b.user }}@{{ b.fqdn }}:{{ b.home }}{{ b.pool }}/{{ inventory_hostname }}
     borg init $REPOSITORY {{ b.options }}
 {% endfor %}
@@ -62,7 +62,7 @@ if [ "$1" = "backup" ]
     {{ precommand }}
 {% endfor %}
 
-{% for b in backupservers %}
+{% for b in borgbackup_servers %}
     printf "Backing up to {{ b.fqdn }} :\n"
     REPOSITORY={{ b.user }}@{{ b.fqdn }}:{{ b.home }}{{ b.pool }}/{{ inventory_hostname }}
     
diff --git a/templates/prune.sh.j2 b/templates/prune.sh.j2
index 7157dda..f01bb2a 100644
--- a/templates/prune.sh.j2
+++ b/templates/prune.sh.j2
@@ -5,9 +5,9 @@
 # Don't put it on the backup server, it contains all borg secrets!
 
 {% for h in groups['all'] %}
-  {% if hostvars[h].borgbackup_required is defined and hostvars[h].borgbackup_required %}
+  {% if hostvars[h].borgbackup_required | default(True) %}
       # Host: {{ h }}
-    {% for b in hostvars[h].backupservers %}
+    {% for b in hostvars[h].borgbackup_servers %}
       {% if hostvars[h].borgbackup_managementstation is defined and inventory_hostname == hostvars[h].borgbackup_managementstation %}
       export BORG_PASSPHRASE={{ hostvars[h].borgbackup_passphrase }}
       REPOSITORY={{ b.user }}@{{ b.fqdn }}:{{ b.home }}{{ b.pool }}/{{ h }}
diff --git a/templates/ssh.config.j2 b/templates/ssh.config.j2
index ac4f8a1..0b80232 100644
--- a/templates/ssh.config.j2
+++ b/templates/ssh.config.j2
@@ -1,5 +1,5 @@
 # backup hosts
-{% for b in backupservers %}
+{% for b in borgbackup_servers %}
 Host {{ b.fqdn }}
    StrictHostKeyChecking no
    {% if b.port is defined %}